VIRUS
virus
(noun) (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
virus, computer virus
(noun) 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”
virus
(noun) a harmful or corrupting agency; “bigotry is a virus that must not be allowed to spread”; “the virus of jealousy is latent in everyone”
Source: WordNet® 3.1
Etymology
Noun
virus (countable and uncountable, plural viruses or virusses or vira or viri or virii)
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.
A disease caused by these organisms.
(archaic) Venom, as produced by a poisonous animal etc.
(computing) A type of malware 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 computer virus.
(computing, proscribed) Any type of malware.
Synonyms
• See also virus
Hypernyms
• (computing): malware
Hyponyms
• DNA virus
• RNA virus
Source: Wiktionary
Vi"rus, n. Etym: [L., a slimy liquid, a poisonous liquid, poison,
stench; akin to Gr. visha. Cf. Wizen, v. i.]
1. (Med.)
(a) Contagious or poisonous matter, as of specific ulcers, the bite
of snakes, etc.; -- applied to organic poisons.
(b) The special contagion, inappreciable to the senses and acting in
exceedingly minute quantities, by which a disease is introduced into
the organism and maintained there.
Note: The specific virus of diseases is now regarded as a microscopic
living vegetable organism which multiplies within the body, and,
either by its own action or by the associated development of a
chemical poison, causes the phenomena of the special disease.
2. Fig.: Any morbid corrupting quality in intellectual or moral
conditions; something that poisons the mind or the soul; as, the
virus of obscene books.
Source: Webster’s Unabridged Dictionary 1913 Edition