2013年2月10日 · 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 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.

2025年2月5日 · 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.

2023年3月29日 · Viruses are microscopic organisms that can infect hosts, like humans, plants or animals. They’re a small piece of genetic information (DNA or RNA) inside of a protective shell (capsid). Some viruses also have an envelope. Viruses can’t reproduce without a host. Some common diseases caused by viruses include the flu, the common cold and COVID-19.

2018年8月25日 · 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.

2024年9月19日 · Viruses are microscopic agents of infection, capable of infecting living organisms from animals and plants to bacteria and archaea. They consist of genetic material, either DNA or RNA, encased in a protein coat. Unlike living cells, viruses cannot reproduce on their own.

VIRUS definition: 1. an extremely small piece of organic material that causes disease in humans, animals, and plants…. Learn more.

VIRUS meaning: 1 : an extremely small particle that causes a disease and that spreads from one person or animal to another; 2 : a disease or illness caused by a virus a viral disease

VIRUS meaning: 1. an extremely small piece of organic material that causes disease in humans, animals, and plants…. Learn more.

VIRUS definition: 1. an infectious organism too small to be seen that causes disease, or an illness that it causes…. Learn more.