(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.
(figurative) Any malicious or dangerous entity that spreads from one place or person to another.
(informal, metonymically) A disease caused by such an infectious agent; a viral illness.
(uncountable) A quantity of such infectious agents
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; such agents are often classed as nonliving infectious particles and less often as microorganisms.
verb
(nonstandard, rare) To send or infect an electronic device with a computer virus.
