It explains in computing terminology what Virus means and is one of many software terms in the TechTerms dictionary. Medical Definition of Coronavirus. These contaminated objects are known as fomites, and can play an important role in … This page contains a technical definition of Virus. A virus is often housed in a protein coat or protein envelope, a protective covering which allows the virus to survive between hosts.. It can make copies of itself inside another organism's cells. Viruses infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea. A virus is a microscopic parasite that can infect living organisms and cause disease. Virus Definition. Most people will be infected with at least one type of coronavirus in their lifetime. Learn more. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Virus Structure Virology is the study of viruses. A virus is a very tiny, infectious particle that lives inside of its host, which can be any living organism. What a virus is. Medical Author: Melissa Conrad Stöppler, MD; Coronavirus: a type of common virus that infects humans, typically leading to an upper respiratory infection (URI.) The structure of a virus and how it infects a cell. If you're seeing this message, it means we're having trouble loading external resources on our website. The virus particles may then either end up on a new potential host or an inanimate object. Viruses consist of nucleic acid and a protein coat. Description: The term 'computer virus' was first formally defined by Fred Cohen in 1983.Computer viruses never occur naturally. Seven different types of human coronavirus have been identified. Many, like influenza, cause illness. The structure of a virus and how it infects a cell. All definitions on the TechTerms website are written to be technically accurate but also easy to understand. A virus is a microscopic organism that invades living cells in order to reproduce. A virus is a chain of nucleic acids (DNA or RNA) which lives in a host cell, uses parts of the cellular machinery to reproduce, and releases the replicated nucleic acid chains to infect more cells. They are always induced by people. Antibiotics don't affect a virus. Virus SARS-CoV-2, a member of the subfamily Coronavirinae Virus classification (unranked): Virus Realms Duplodnaviria Monodnaviria Riboviria Varidnaviria A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. virus meaning: 1. an extremely small piece of organic material that causes disease in humans, animals, and plants…. Definition: A computer virus is a malicious software program loaded onto a user’s computer without the user’s knowledge and performs malicious actions. 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