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- Dictionaryvi·rus/ˈvīrəs/
noun
- 1. an infective agent that typically consists of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host: "the hepatitis B virus"
- 2. a piece of code that is capable of copying itself and typically has a detrimental effect, such as corrupting the system or destroying data.
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Jun 18, 2024 · Virus, infectious agent of small size and simple composition that can multiply only in living cells of animals, plants, or bacteria. Viruses possess unique infective properties and thus often cause disease in host organisms. Learn about the history, types, and features of viruses.
The meaning of VIRUS is any of a large group of submicroscopic infectious agents that are usually regarded as nonliving extremely complex molecules, that typically contain a protein coat surrounding an RNA or DNA core of genetic material but no semipermeable membrane, that are capable of growth and multiplication only in living cells, and that ...
a hidden set of instructions in a computer program that is intended to introduce faults into a computer system or cause it to perform actions that were not planned. (Definition of virus from the Cambridge Academic Content Dictionary © Cambridge University Press)
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. [1] . Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. [2] [3] Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity.
Mar 29, 2023 · Viruses are small germs (pathogens) that can infect you and make you sick. They can infect humans, plants, animals, bacteria and fungi. Each one infects only specific types of hosts. Viral infections in humans can cause no symptoms or make you extremely ill. Types of diseases they can cause include:
Apr 21, 2023 · Viruses exist almost everywhere, and they can infect any living organism. Here, learn more about viruses, how they work, and how to get protection.
noun. any of a group of submicroscopic entities consisting of a single nucleic acid chain surrounded by a protein coat and capable of replication only within the cells of living organisms: many are pathogenic. informal. a disease caused by a virus. any corrupting or infecting influence.
