US English. When words sound different in isolation vs. It is an organic compound made up of three subunits: a nucleobase (either a purine or a pyrimidine), a five-carbon sugar (pentose), and a phosphate group. How do you say Single-nucleotide? Listen to the audio pronunciation of Single-nucleotide on pronouncekiwiCatalan Pronunciation: Chinese (Mandarin) Pronunciation: Chinese (China) Pronunciation: Chinese (Hong Kong) Pronunciation: Chinese (Taiwan) Pronunciation: Danish Pronunciation: Danish Pronunciation: Danish Pronunciation: Danish Pronunciation: Dutch Pronunciation: Dutch Pronunciation: Dutch Pronunciation:. . Nucleotide Nucleotide excision repair Nucleoside. Show more. Samantha. Improve your american english pronunciation of the word nucleotide. What does nucleotide deaminases mean? Information and translations of nucleotide deaminases in the most comprehensive dictionary definitions resource on the web. self perception. Julia. US English. Nucleotide Deaminases are an important class of enzymes that catalyzes the hydrolytic deamination of nucleotides, resulting in the release of an amino acid as a by-product. This pronounced audio dictionary provides More accurate, easy way to learn English words pronunciation. Over 10000 words available. Mark. Over 10000 words available. one of a group of chemical compounds found in living cells in nucleic acids such as DNA and RNA…. FASTX and FASTY translate a nucleotide query for searching a protein database. US English. Listen to the pronunciation of Nicotinate-nucleotide-dimethylbenzimidazole phosphoribosyltransferase and learn how to pronounce Nicotinate-nucleotide-dimethylbenzimidazole phosphoribosyltransferase correctly. net. 2023. Difficult. Break 'nucleotide excision repair' down into sounds: say it out loud and exaggerate the sounds until you can consistently produce them. Taxonomy browser (Bacillus amyloliquefaciens) PubChem BioAssay. . US English. You'll be able to mark your mistakes quite easily. Nucleotide pronunciation in Australian English Nucleotide pronunciation in American English Nucleotide pronunciation in American English Take your English pronunciation to the next level with this audio dictionary references of the word nucleotide. Learn more. Listen to the audio pronunciation of Nicotinamide Adenine Dinucleotide on pronouncekiwi. ; Record yourself saying 'nucleotide pair' in full sentences, then watch yourself and listen. The document has been permanently moved. What does nucleotide excision repair mean? Information and translations of nucleotide excision repair in the most comprehensive dictionary definitions resource on the web. The sugar component may either be ribose or deoxyribose. pronouncekiwi. The STANDS4 Network. Definition and meaning can be found here:nucleic acid pronunciation. Learn how to say nucleotide in English. Here are 4 tips that should help you perfect your pronunciation of 'nucleotide pair':. How to say polinucleotide in Italian? Pronunciation of polinucleotide with 1 audio pronunciation and more for polinucleotide. This pronounced audio dictionary provides More accurate, easy way to learn English words pronunciation. How to say nicotinamide dinucleotide in Romanian? Pronunciation of nicotinamide dinucleotide with and more for nicotinamide dinucleotide. Learn how to say Nucleotide in English correctly with TextToSpeech. How to say nicotinamide adenine dinucleotide phosphate in English? Pronunciation of nicotinamide adenine dinucleotide phosphate with 8 audio pronunciations, 2 synonyms, 1 meaning, 7 translations and more for nicotinamide adenine dinucleotide phosphate. The. Learn more. ; Record yourself saying 'nucleotide sequences' in full sentences, then watch yourself and listen. ABBREVIATIONS; ANAGRAMS;. Menu. What does nucleotide excision repair mean? Information and translations of nucleotide excision repair in the most comprehensive dictionary definitions resource on the web. Catalan Pronunciation: Chinese (Mandarin) Pronunciation: Chinese (China) Pronunciation: Chinese (Hong Kong) Pronunciation:How do you say Guanine nucleotide binding protein? Listen to the audio pronunciation of Guanine nucleotide binding protein on pronouncekiwi. Break 'nucleotide base' down into sounds: say it out loud and exaggerate the sounds until you can consistently produce them. nucleotide inversion in Chinese : 核苷酸倒位. 0 rating. 9 percent of their genetic material, single-letter differences in our DNA sequences—known as single nucleotide polymorphisms, or SNPs ("snips")—ensure that each individual is unique. Nucleotides definition: . ATP: [noun] a phosphorylated nucleotide C10H16N5O13P3 composed of adenosine and three phosphate groups that supplies energy for many biochemical cellular processes by undergoing enzymatic hydrolysis especially to ADP. Start Free Trial. This pronounced audio dictionary provides More accurate, easy way to learn English words pronunciation. com with free online thesaurus, synonyms, definitions and translations. . US. Currently popular pronunciations. often pronunciation. Translate. Julia. You'll be able to mark your mistakes quite. You'll be able to mark your mistakes quite. Currently popular pronunciations. Victoria. See how nucleotide is divided with our syllable counter and separator. Pick your prefered accent: Alex. Catalan Pronunciation: Chinese (Mandarin) Pronunciation: Chinese (China) Pronunciation. ; Record yourself saying 'nucleotide pair' in full sentences, then watch yourself and listen. It is an organic compound made up of three subunits: a nucleobase (either a purine or a pyrimidine), a five-carbon sugar (pentose), and a phosphate group. Pronunciation of cyclic nucleotide phosphodiesterases in English, a free online English pronunciation dictionary. What rhymes with nucleotide mapping? nu·cleo·tide map·ping This page is about the various possible words that rhymes or sounds like nucleotide mapping. : an oligonucleotide with an oxygen atom linking consecutive nucleotides see phosphodiester bond compare phosphorothioate. How to say un polinucleotide in Italian? Pronunciation of un polinucleotide with 1 audio pronunciation and more for un polinucleotide. How to say cyclic nucleotide in English? Pronunciation of cyclic nucleotide with 1 audio pronunciation, 12 translations and more for cyclic nucleotide. nuclide pronunciation. Solution provided by AtoZmath. How to say SNP. How to Pronounce nucleotide - American English. Although all humans share 99. British. Login . Learn more: English Grammar. We are to pronounce cyclic nucleotide phosphodiesterases by audio dictionary. DNA and RNA). Pick your prefered accent: Alex. We are to pronounce adenine nucleotide translocator 3 by audio dictionary. It is an organic compound made up of three subunits: a nucleobase (either a purine or a pyrimidine), a five-carbon sugar (pentose), and a phosphate group. How to pronounce. 23 ratings. g. 0. Fred. taɪd/ nucleotide /n/ as in name /j/. Pronunciation of adenine nucleotide translocator 2 in English, a free online English pronunciation dictionary. English (USA) Pronunciation English (UK) Pronunciation Pronunciation of Nucleotide: Learn how to pronounce the word Nucleotide. . US English. Login . nucleotide inversion in Chinese : 核苷酸倒位. US English. FAD can exist in three (or four: see below, flavin-N (5)-oxide) different redox states, which are the quinone, semiquinone, and hydroquinone. Fred. Daniel. Definition and meaning can be found here:How to say Nucleotidees in English? Pronunciation of Nucleotidees with 1 audio pronunciation and more for Nucleotidees. How to properly pronounce aptamers, nucleotide? aptamers, nucleotide Pronunciation ap·tamer·s, nu·cleo·tide Here are all the possible pronunciations of the word aptamers, nucleotide. 301 Moved Permanently . US English. pronouncekiwi - How To Pronounce Nucleotide pair. Over 10000 words available. FASTA (pronounced FAST-AYE) is a suite of programs for searching nucleotide or protein databases with a query sequence. Improve your american english pronunciation of the word nucleotide. pronouncekiwi - How To Pronounce Guanine nucleotide binding protein. io free pronunciation tutorials. Catalan Pronunciation: Chinese (Mandarin) Pronunciation: Chinese (China) Pronunciation: Chinese (Hong Kong) Pronunciation: Chinese (Taiwan) Pronunciation: Danish Pronunciation:Listen to the pronunciation of Nicotinate-nucleotide diphosphorylase (carboxylating) and learn how to pronounce Nicotinate-nucleotide diphosphorylase (carboxylating) correctly. io free pronunciation tutorials. LoginListen to the pronunciation of Di-deoxy nucleotide and learn how to pronounce Di-deoxy nucleotide correctly. The contribution of ectonucleotidases in the modulation of purinergic signaling depends on the availability. Listen to the pronunciation of Cyclic 3',5-nucleotide monophosphate phosphodiesterase and learn how to pronounce Cyclic 3',5-nucleotide monophosphate phosphodiesterase correctly. Dictionary Collections. HowToPronounce38. British. Meaning, pronunciation, picture, example sentences, grammar,. Easy. How to say Oligionucleotide in English? Pronunciation of Oligionucleotide with 1 audio pronunciation and more for Oligionucleotide. noun. Listen to the pronunciation of Guanine-nucleotide exchange factor and learn how to pronounce Guanine-nucleotide exchange factor correctly. Add antonyms. English - Tamil Dictionary. phonetic alphabet. The STANDS4 Network. How to say nicotinamide dinucleotide in Afrikaans? Pronunciation of nicotinamide dinucleotide with 1 audio pronunciation and more for nicotinamide dinucleotide. The meaning of OLIGONUCLEOTIDE is a short nucleic-acid chain usually consisting of up to approximately 20 nucleotides. Currently popular pronunciations. You may want to improve your pronunciation of ''nucleotides'' by saying one of the nearby words below: nuclear; nucleus; nuclei; nucleotide; nucleophile; nucleic; nucleophilic;. pronouncekiwi. ; Record yourself saying 'nucleotide sequence' in full sentences, then watch yourself and listen. A deletion is indicated using “del”. Here are 4 tips that should help you perfect your pronunciation of 'nucleotide sequence':. in a sentence, look up the pronunciation first in a dictionary, then use 1 n a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA) Synonyms: base Types: show 10 types. g. Check pronunciation: nucleotide. Add. Meaning of nucleotide transport proteins. How to say triphosphopyridine nucleotide in English? Pronunciation of triphosphopyridine nucleotide with 1 audio pronunciation, 3 synonyms, 1 meaning, 7 translations and more for triphosphopyridine nucleotide. Pronunciation of Oligonnucleotide with and more for Oligonnucleotide. In bacteria and eukaryotes, these enzymes are involved in amino acid biosynthesis, DNA repair, and translation of. How many syllables in nucleotide? 1 5 3 9 6 7 2 4 8 syllables. . Currently popular pronunciations. Catalan Pronunciation: Chinese. in a sentence, look up the pronunciation first in a dictionary, then use to say dinucleotide in English? Pronunciation of dinucleotide with 1 audio pronunciation, 2 synonyms, 1 meaning, 9 translations, 1 sentence and more for dinucleotide. US English. David. a nucleotide variant changing a purine nucleotide to a pyrimidine nucleotide (A or G > T or C), or a pyrimidine nucleotide to a purine nucleotide (C or T > A or G) triplication a sequence change where, compared to a reference sequence, two copies of a sequence are inserted directly 3’ of the original copy of that sequence (see Recommendations. How to say hematopoietic in English? Pronunciation of hematopoietic with 6 audio pronunciations, 6 synonyms, 1 meaning, 9 translations, 2 sentences and more for hematopoietic. How to pronounce nucleotide: How to pronounce nucleotide. Nucleic acids are made. . This video shows you how to pronounce Nucleic This video shows you how to pronounce Nucleotide How to say nucleotide ciclico in Italian? Pronunciation of nucleotide ciclico with 1 audio pronunciation and more for nucleotide ciclico. 301 Moved Permanently . The 5′ is upstream; the 3′ is downstream. See examples of NUCLEOTIDES used in a sentence. . How to say nucleotide in English? Pronunciation of nucleotide with 2 audio pronunciations, 2 synonyms, 1 meaning, 13 translations, 1 sentence and more for nucleotide. English (UK) Pronunciation: English (UK) Pronunciation: English (UK) Pronunciation: English (UK) Pronunciation: English (UK) Pronunciation: English (UK) PronunciationHow do you say Pyridine nucleotide transhydrogenase? Listen to the audio pronunciation of Pyridine nucleotide transhydrogenase on pronouncekiwiPronunciation of nucleotide deaminases in English, a free online English pronunciation dictionary. The STANDS4 Network. Ectonucleotidases consist of families of nucleotide metabolizing enzymes that are expressed on the plasma membrane and have externally oriented active sites. Pronunciation of single nucleotide polymorphism in English, a free online English pronunciation dictionary. LoginDetails Overview . progress dashboard. This video shows you how to pronounce Nucleotide. Learn more. Break 'nucleotide sequences' down into sounds: say it out loud and exaggerate the sounds until you can consistently produce them. 0. Pronunciation Guide. ABBREVIATIONS; ANAGRAMS;. Learn how to say/pronounce nucleotide in American English. Chinese (Mandarin) Pronunciation: Chinese (China) Pronunciation: Chinese (Hong Kong) Pronunciation: Chinese (Taiwan) Pronunciation: Danish Pronunciation: Danish Pronunciation: Danish Pronunciation: Danish Pronunciation: Dutch Pronunciation: Dutch Pronunciation: Dutch Pronunciation: Dutch Pronunciation: English (Australia). Introduction to nucleic acids and nucleotides. using filter: has genome sequences. Pronunciation of single nucleotide polymorphism Single Nucleotide PolymorphismListen to the pronunciation of Cyclic nucleotide gated channel alpha 1 and learn how to pronounce Cyclic nucleotide gated channel alpha 1 correctly. How to pronounce a nucleotide? Alex. Definition and meaning can be found here:How to say nucleotide polymorphisms in English? Pronunciation of nucleotide polymorphisms with 1 audio pronunciation and more for nucleotide polymorphisms. How to properly pronounce aptamers, nucleotide? aptamers, nucleotide Pronunciation ap·tamer·s, nu·cleo·tide Here are all the possible pronunciations of the word aptamers, nucleotide. The five bases are adenine, guanine, cytosine, thymine, and uracil, which have the symbols A, G, C, T, and U, respectively. in a sentence, look up the pronunciation first in a dictionary, then use Overview . DNA is the genetic material found in living organisms, all the way from single-celled bacteria to multicellular mammals like you and me. American & British English pronunciation of male & female. Chinese (Mandarin) Pronunciation: Chinese (China) Pronunciation: Chinese (Hong Kong) Pronunciation: Chinese (Taiwan) Pronunciation: Danish Pronunciation: Danish Pronunciation: Danish Pronunciation: Danish Pronunciation: Dutch Pronunciation: Dutch Pronunciation: Dutch Pronunciation: Dutch Pronunciation: English (Australia). Nucleotides definition: . Watch how to say and pronounce "nucleotides"!Listen our video to compare your pronunciation!Want to know how other words sound like? Look for nucleotide, nuc. How do you say Cyclic nucleotide-gated channel alpha 4? Listen to the audio pronunciation of Cyclic nucleotide-gated channel alpha 4 on pronouncekiwinucleotide উচ্চারণ। nucleotide কিভাবে বলতে হয়। ইংরেজিতে অডিও উচ্চারণ শুনুন। আরো জানুন।pronouncekiwi - How To Pronounce Nucleotide base. Dictionary Collections Quiz Community Contribute CertificateHow to say nucleotideases in English? Pronunciation of nucleotideases with 1 audio pronunciation and more for nucleotideases. . Unlock premium audio pronunciations. Listen to the audio pronunciation in the Cambridge English Dictionary. pronouncekiwi - How To Pronounce Adenine nucleotide translocator. Listen to the pronunciation of Cyclic nucleotide gated channel beta 3 and learn how to pronounce Cyclic nucleotide gated channel beta 3 correctly. We are to pronounce single nucleotide polymorphism by audio dictionary. Nucleic acids, macromolecules made out of units called nucleotides, come in two naturally occurring varieties: deoxyribonucleic acid ( DNA) and ribonucleic acid ( RNA ). Catalan Pronunciation: Chinese (Mandarin) Pronunciation: Chinese (China) Pronunciation: Chinese (Hong Kong) Pronunciation:phosphoramidite pronunciation - How to properly say phosphoramidite. Listen to the audio pronunciation in English. Dedicated importer for Vector NTI Express and Advance databases preserves metadata, full database structure including subsets, and lineage information. pronouncekiwi - How To Pronounce Transcription-coupled nucleotide excision repair. . click for more detailed Chinese translation, meaning, pronunciation and example sentences. How do you say Nicotinamide nucleotide transhydrogenase? Listen to the audio pronunciation of Nicotinamide nucleotide transhydrogenase on pronouncekiwiWhat does nucleotide mapping mean? Information and translations of nucleotide mapping in the most comprehensive dictionary definitions resource on the web. How to say nucleotides in English? Pronunciation of nucleotides with 1 audio pronunciation, 1 meaning, 13 translations. Not sure why it's: a an an an a a an a a nucleotide? Contact Us! We'll explain. How to say diphosphopyridine nucleotide. Pronunciation of Nicotinamide adenin dinucleotide with 1 audio pronunciations. Have a definition for Nucleotide pair ? Write it here to share it with the entire community. Introduction. Nucleotide has 4 syllables and the stress is on the first syllable. Pronunciation of Nicotinamide-adenine-dinucleotide-phosphate with 1 audio pronunciations. David. We are to pronounce guanine nucleotide dissociation inhibitors by audio dictionary. g. Definition of nucleotide noun in Oxford Advanced Learner's Dictionary. When words sound different in isolation vs. How do you say Nicotinamide-nucleotide adenylyltransferase? Listen to the audio pronunciation of Nicotinamide-nucleotide adenylyltransferase on pronouncekiwiListen to the pronunciation of Cyclic nucleotide-gated channel beta 1 and learn how to pronounce Cyclic nucleotide-gated channel beta 1 correctly. US English. Pick your prefered accent: Alex. How to say pronounce in English? Pronunciation of pronounce with 62 audio pronunciations, 15 synonyms, 6 meanings, 17 translations, 37 sentences and more for pronounce. How to say nuclide. Login . What does a nucleotide mean? Information and translations of a nucleotide in the most comprehensive dictionary definitions resource on the web. A nucleotide is regarded as the basic building block of nucleic acid polymers (e. Add Definition. Break 'nucleotide pair' down into sounds: say it out loud and exaggerate the sounds until you can consistently produce them. How to say nucleic acid. How to say nicotinamide adenine dinucleotide phosphate in English? Pronunciation of nicotinamide adenine dinucleotide phosphate with 8 audio pronunciations, 2 synonyms, 1 meaning, 7 translations and more for nicotinamide adenine dinucleotide phosphate. pronouncekiwi. Listen to the pronunciation of Cyclic nucleotide gated channel alpha 3 and learn how to pronounce Cyclic nucleotide gated channel alpha 3 correctly. . It is an ester of phosphoric acid with the nucleoside guanosine. ə. How to pronounce pronunciation. Expand your vocabulary, learn Englis. Learn more. How to say nicotinamide dinucleotide in English? Pronunciation of nicotinamide dinucleotide with 1 audio pronunciation and more for nicotinamide dinucleotide. You'll be able to mark your mistakes quite easily. The. It is an ester of phosphoric acid with the nucleoside guanosine. hematopoietic. in a sentence, look up the pronunciation first in a dictionary, then use of dideoxynucleotide with 2 audio pronunciations, 1 synonym, 1 meaning, 1 translation and more for dideoxynucleotide. Feel free to ask q. Definition and meaning can be found here:acid pronunciation. If the word is from another language, such as brand name, it will. How to say diphosphopyridine nucleotide in English? Pronunciation of diphosphopyridine nucleotide with 1 audio pronunciation and more for diphosphopyridine nucleotide. Nucleotide pronunciation in Australian English Nucleotide pronunciation in American English Nucleotide pronunciation in American English Take your English pronunciation to the next level with this audio dictionary references of the word nucleotide. click for more detailed Chinese translation, meaning, pronunciation and example sentences. US English. Listen to the pronunciation of Cyclic nucleotide-gated channel alpha 3 and learn how to pronounce Cyclic nucleotide-gated channel alpha 3 correctly. How to say nicotinamide dinucleotide in Icelandic? Pronunciation of nicotinamide dinucleotide with and more for nicotinamide dinucleotide. Learn how to say/pronounce nucleotide in American English. Have a definition for Adenine nucleotide translocator ? Write it here to share it with the entire community. intercalating agents), radiation and other mutagens. How to say nicotinamide dinucleotide in Dutch? Pronunciation of nicotinamide dinucleotide with and more for nicotinamide dinucleotide. The. Daniel. US English. US English. Free online practice with real-time pronunciation feedback. audio files are free to play or download. kli. Find all the synonyms and alternative words for nucleotide at Synonyms. On DNA and RNA level a substitution is indicated using ”>”. Meaning of nucleotide transport proteins. Mark. 18 words even you might be mispronouncing. ; Record yourself saying 'nucleotide base' in full sentences, then watch yourself and listen. nucleotide pronunciation. Nucleotides are joined together through the phosphate group of one nucleotide connecting in an ester linkage to the OH group on the 3' carbon atom of the sugar unit of a second nucleotide. Break 'nucleotide sequence' down into sounds: say it out loud and exaggerate the sounds until you can consistently produce them. taɪd/ US /ˈnuː. Syllable Dictionary; Grammar; Syllable Rules; Workshop; Workshop; Teacher Resources; Syllables Quiz. Listen to the pronunciation of Nucleotide and learn how to pronounce Nucleotide correctly. How to say phosphoramidite in English? Pronunciation of phosphoramidite with 4 audio pronunciations, 1 meaning, 4 translations and more for phosphoramidite. Mark. Learn more. nucleotide mapping Pronunciation nu·cleo·tide map·ping Here are all the possible pronunciations of the word nucleotide mapping. Last updated. com. taɪd/ nucleotide /n/ as in name /j/ as in yes /uː/ as in blue /k/ as in cat /l/ as in look /i/ as in happy /ə/ as in above /t/ as in town /aɪ/ as in eye /d/ as in day US /ˈnuː. Listen to the audio pronunciation in English. Ectonucleotidases consist of families of nucleotide metabolizing enzymes that are expressed on the plasma membrane and have externally oriented active sites. How to make acronyms plural. The contribution of ectonucleotidases in the modulation of purinergic signaling depends on the availability. Start Free Trial. This pronounced audio dictionary provides More accurate, easy way to. Nucleotide definition: any of a group of molecules that, when linked together, form the building blocks of DNA or RNA. US English. a nucleotide that contains deoxyribose and is a constituent of DNA… See the full definition. Here are 4 tips that should help you perfect your pronunciation of 'nucleotide excision repair':. Improve your american english pronunciation of the word nucleotide. American & British English pronunciation of male & female. after transforming e . Learn how to say Cytosine with EmmaSaying free pronunciation tutorials. Mark. US English. Unlock premium audio pronunciations. noun. Pronunciation of nucleotide. nucleotide nucleotide syllables. Libby. How to pronounce nucleic acid. Listen to the pronunciation of Nicotinate-nucleotide--dimethylbenzimidazole phosphoribosyltransferase and learn how to pronounce Nicotinate-nucleotide--dimethylbenzimidazole phosphoribosyltransferase correctly. Very difficult. US English. 09. How to say triphosphopyridine nucleotide in English? Pronunciation of triphosphopyridine nucleotide with 1 audio pronunciation, 3 synonyms, 1 meaning, 7 translations and more for triphosphopyridine nucleotide. US English. Listen to the pronunciation of Pyridine nucleotide transferase and learn how to pronounce Pyridine nucleotide transferase correctly. 1 /5. In biochemistry, flavin adenine dinucleotide is a redox cofactor, more specifically a prosthetic group, involved in several important reactions in metabolism. Learn more. noun. Cite This Source. com. Read >. pronouncekiwi. US English. British English pronunciation. How to say nicotinamide dinucleotide in Italian? Pronunciation of nicotinamide dinucleotide with and more for nicotinamide dinucleotide. Here are 4 tips that should help you perfect your pronunciation of 'nucleotide pair':. Have a definition for Nucleotide base ? Write it here to share it with the entire community. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Fred. Watch how to say and pronounce "nucleotides"! Listen our video to compare your pronunciation! Want to know how other words sound. How to say Nucleotidees in English? Pronunciation of Nucleotidees with 1 audio pronunciation and more for Nucleotidees. lessons. Break 'nucleotide pair' down into sounds: say it out loud and exaggerate the sounds until you can consistently produce them. Difficult. This pronounced audio dictionary provides More accurate, easy way to learn English words pronunciation. How to say nucleotide: How to pronounce nucleotide. What does nucleotide excision repair mean? Information and translations of nucleotide excision repair in the most comprehensive dictionary definitions resource on the web. GMP consists of the phosphate group, the pentose sugar ribose, and the nucleobase guanine; hence it is a ribonucleoside. ə. Logincyclic nucleotide Meaning. Directionality, in molecular biology and biochemistry, is the end-to-end chemical orientation of a single strand of nucleic acid. US English. When words sound different in isolation vs.