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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.
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.
Mar 29, 2023 · Viruses are microscopic germs that have to infect a host, like humans, animals or plants to reproduce. They carry DNA or RNA in a protective shell (capsid).
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity. Since Dmitri Ivanovsky's 1892 article describing a non-bacterial pathogen ...
Aug 25, 2018 · Virus Definition. 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. A virus is often housed in a protein coat or protein envelope, a protective covering which allows the virus to survive between hosts.. Virus Structure
virus: [noun] a disease or illness caused by a virus. the causative agent of an infectious disease.
2 days ago · A virus is an infectious microbe consisting of a segment of nucleic acid (either DNA or RNA) surrounded by a protein coat. A virus cannot replicate alone; instead, it must infect cells and use components of the host cell to make copies of itself.
Virus definition: an ultramicroscopic (20 to 300 nanometers in diameter), metabolically inert, infectious agent that replicates only within the cells of living hosts, mainly bacteria, plants, and animals. See examples of VIRUS used in a sentence.
Feb 24, 2022 · Definition noun, plural: viruses A submicroscopic infectious agent that is unable to grow or reproduce outside a host cell.It is non-cellular but consisting of a core of DNA or RNA surrounded by a protein coat. Supplement A virus requires a living cell for it to grow and reproduce similar to an obligate intracellular parasite.Many viruses can cause disease in host organisms but not all can ...
A virus is an infectious agent that can replicate only within a host organism. Viruses infect a variety of living organisms, including bacteria, plants, and animals
VIRUS meaning: 1. an extremely small piece of organic material that causes disease in humans, animals, and plants…. Learn more.
