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| | # {{archaic}} [[venom|Venom]], as produced by a poisonous animal etc. | | # {{archaic}} [[venom|Venom]], as produced by a poisonous animal etc. |
| | + | # A type of microscopic agent that causes an infectious disease or the disease so caused. |
| | + | #: ''He caught a '''virus''' and stayed home from school.'' |
| | # {{pathology|microbiology|virology}} A submicroscopic infectious organism, now understood to be a non-cellular structure consisting of a core of [[DNA]] or [[RNA]] surrounded by a [[protein]] coat. It requires a living cell to [[replicate]], and often causes disease in the host organism. | | # {{pathology|microbiology|virology}} A submicroscopic infectious organism, now understood to be a non-cellular structure consisting of a core of [[DNA]] or [[RNA]] surrounded by a [[protein]] coat. It requires a living cell to [[replicate]], and often causes disease in the host organism. |
| | #* '''2001''', Leslie Iversen, ''Drugs: A Very Short Introduction'' (Oxford 2001, p. 64) | | #* '''2001''', Leslie Iversen, ''Drugs: A Very Short Introduction'' (Oxford 2001, p. 64) |
