RIBONUCLEIC ACID Meaning of RIBONUCLEIC ACID in English [ ˌrʌɪbə(ʊ)nju:'kleɪɪk , -'kli:ɪk ]■ noun see RNA .Origin1930s: ribonucleic from ribose + nucleic acid . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004