WordReference Random House Unabridged Dictionary of American English © 2025
on•cor•na•vi•rus
(ong kôr′nə vī′rəs, -kôr′nə vī′-),USA pronunciation n., pl. -rus•es. [Pathol.]
- Microbiologyany of various RNA viruses that cause tumors in humans and other animals.
- onco- + RNA + virus 1965–70