provirus

[proh-vahy-ruhs, proh-vahy-]
noun, plural proviruses.
a viral form that is incorporated into the genetic material of a host cell.

Origin:
1945–50; pro-1 + virus, on the model of prophage

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World English Dictionary
provirus (ˈprəʊˌvaɪrəs)
 
n
the inactive form of a virus in a host cell

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

provirus pro·vi·rus (prō'vī'rəs, prō-vī'-)
n. pl. pro·vi·rus·es
The precursor or latent form of a virus that is capable of being integrated into the genetic material of a host cell and being replicated with it.

The American Heritage® Stedman's Medical Dictionary
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Example sentences
The site of integration in the host genome influences the expression of the integrated provirus.
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