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Dictionary definition for: Virus
1. (n) (virology) ultramicroscopic infectious agent that replicates itself only within cells of living hosts; many are pathogenic; a piece of nucleic acid (DNA or RNA) wrapped in a thin coat of protein
2. (n) a harmful or corrupting agency; "bigotry is a virus that must not be allowed to spread" "the virus of jealousy is latent in everyone"
3. (n) a software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer; "a true virus cannot spread to another computer without human assistance"
WordNet 2.1 Copyright Princeton University. All rights reserved.