| virus | |
| 1. n. wikispecies, Virus | |
| 2. n. (archaic) Venom, as produced by a poisonous animal etc. | |
| 3. n. A submicroscopic, non-cellular structure consisting of a core of DNA or RNA surrounded by a protein coat, that requires a living host cell to replicate, and often causes disease in the host organism. | |
| 4. n. A disease caused by these organisms. | |
| He caught a virus and had to stay home from school. | |
| 5. n. (computing) A program which can covertly transmit itself between computers via networks (especially the Internet) or removable storage such as disks, often causing damage to systems and data; also com | |
