What is a virus?

Your answer is 1 | noun | (virology) ultramicroscopic infectious agent that replicates itself only within cells of living hosts; many are pathogenic; a piece of nucleic acid (DNA or RNA) wrapped in a thin coat of protein 2 | noun | a harmful or corrupting agency 3 | noun | a software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer. Src: Wolfram|Alpha

Answered - 234 days ago at 12:48pm on Jun 23 2011

A virus is an infective agent, too small to be seen by light microscopy, able to multiply only within living cells of a host. It is also a piece of computer code capable of copying itself and typically has a detrimental effect. Adios Chamigo.

Answered - 301 days ago at 7:40pm on Apr 17 2011

A virus is a microscopic infectious agent that can reproduce only inside a host cell. Wash your hands well! ChaCha!

Answered by Zoila R. - 668 days ago at 12:13pm on Apr 15 2010

There are two kinds of virus. Malicious computer code designed to damage computer software. The other is an biological infection.

Answered by Frank W. - 1052 days ago at 2:50pm on Mar 27 2009

Sub-microscopic infectious agent unable to grow/reproduce outside host cell, infect all cellular life, are considered non-living.

Answered by Maura M. - 1071 days ago at 9:04am on Mar 08 2009

A virus is a ultramicroscopic infectious agent that replicates itself only within cells of living hosts; many are pathogenic.

Answered by Amy C. - 1076 days ago at 4:58am on Mar 03 2009

A virus is an ultramicroscopic metabolically inert, infectious agent that replicates only within the cells of living hosts. ChaCha

Answered by Pam W. - 1079 days ago at 3:52am on Feb 28 2009

A virus- an ultramicroscopic infectious agent that replicates itself only within cells of living hosts; many are pathogenic.

Answered by Junior R. - 1115 days ago at 8:29pm on Jan 23 2009