Definition of RNA noun from the Oxford Advanced Learner's Dictionary

 

RNA

 noun
noun
BrE BrE//ˌɑːr en ˈeɪ//
 
; NAmE NAmE//ˌɑːr en ˈeɪ//
 
[uncountable](chemistry) Cell biology
 
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a chemical present in all living cells; like DNA it is a type of nucleic acid See related entries: Cell biology

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