[ proh-vahy-ruh s, proh-vahy- ]
/ ˈproʊˌvaɪ rəs, proʊˈvaɪ- /

noun, plural pro·vi·rus·es.

a viral form that is incorporated into the genetic material of a host cell.

Origin of provirus

1945–50; pro-1 + virus, on the model of prophage Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for provirus


/ (ˈprəʊˌvaɪrəs) /


the inactive form of a virus in a host cell
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for provirus


[ prōvī′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 Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.