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ribonucleic acid

noun [U]
 
 
/ˌraɪ.bəʊ.njuː.kliː.ɪkˈæs.ɪd/ US  /-boʊ.nuː.kliː-/ (abbreviation RNA) specialized

Definition

an important chemical present in all living cellsAnimal biochemistryPlant biochemistry
(Definition of ribonucleic acid noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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