heterogeneous ribonucleic acid

heterogeneous ribonucleic acid

[‚hed·ə·rə′jē·nē·əs ¦rī·bō·nü¦klē·ik ′as·əd] (cell and molecular biology) A large molecule of ribonucleic acid that is believed to be the precursor of messenger ribonucleic acid. Abbreviated H-RNA.