transfer ribonucleic acid
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transfer ribonucleic acid[′tranz·fər ¦rī·bō·nü¦klē·ik ′as·əd]
(cell and molecular biology)
The smallest ribonucleic acid molecule found in cells; its structure is complementary to messenger ribonucleic acid and it functions by transferring amino acids from the free state to the polymeric form of growing polypeptide chains. Abbreviated t-RNA.