| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024vi•rus /ˈvaɪrəs/USA pronunciation n. [countable], pl. -rus•es. - Microbiologya very small living thing causing infection, which reproduces only within the cells of living hosts, mainly bacteria, plants, and animals.
- Pathology, Informal Termsa disease caused by a virus:was ill from a virus.
- a corrupting idea or thought or a harmful influence on morals or the intellect.
- Computinga part of a computer program that is planted illegally in another program, often to damage or shut down a system or network.
WordReference Random House Unabridged Dictionary of American English © 2024vi•rus (vī′rəs),USA pronunciation n., pl. -rus•es. - Microbiologyan ultramicroscopic (20 to 300 nm in diameter), metabolically inert, infectious agent that replicates only within the cells of living hosts, mainly bacteria, plants, and animals: composed of an RNA or DNA core, a protein coat, and, in more complex types, a surrounding envelope.
- Pathology, Informal Terms[Informal.]a viral disease.
- a corrupting influence on morals or the intellect;
poison. - Computinga segment of self-replicating code planted illegally in a computer program, often to damage or shut down a system or network.
- Latin vīrus slime, poison; akin to ooze2
- 1590–1600
Collins Concise English Dictionary © HarperCollins Publishers:: virus /ˈvaɪrəs/ n ( pl -ruses)- any of a group of submicroscopic entities consisting of a single nucleic acid chain surrounded by a protein coat and capable of replication only within the cells of living organisms: many are pathogenic
- informal a disease caused by a virus
- any corrupting or infecting influence
- an unauthorized program that inserts itself into a computer system and then propagates itself to other computers via networks or disks; when activated it interferes with the operation of the computer
Etymology: 16th Century: from Latin: slime, poisonous liquid; related to Old English wāse marsh, Greek ios poison |