Virus Definition With Picture

Definition of virus noun in oxford advanced learner s dictionary.

Virus definition with picture. A virus is a microscopic organism that invades living cells in order to reproduce. We use cookies to enhance your experience on our website including to provide targeted advertising and track usage. A disease caused by a virus. Virus definition 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 cause various important diseases in humans animals.

Meaning pronunciation picture example sentences grammar usage notes synonyms and more. Unable to replicate without a host cell viruses are typically not considered living organisms. Many like influenza cause illness. Learn about the history types and features of viruses.

Viruses possess unique infective properties and thus often cause disease in host organisms.