WordReference Random House Unabridged Dictionary of American English © 2026
pol•y•ri•bo•some
(pol′ē rī′bə sōm′),USA pronunciation n. [Biol.]
- Genetics, Cell Biologypolysome.
- poly- + ribosome 1960–65
'polyribosome' also found in these entries (note: many are not synonyms or translations):