Dictionary.com
definitions

lentivirus

[len-tuh-vahy-ruh s]
noun, plural len·ti·vi·rus·es.
  1. any slow virus of the genus Lentivirus, of the retrovirus family, causing brain disease in sheep and other animals.

Origin of lentivirus

lenti(cular) + virus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for lentivirus

lentivirus

noun
  1. any of a group of slowly acting viruses that includes the human immunodeficiency virus (HIV), which causes AIDS

Word Origin for lentivirus

C20: from Latin lentus slow + virus
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
lentivirus in Medicine

lentivirus

[lĕn′tə-vī′rəs]
n.
  1. A virus of the genus Lentivirus and the family Retroviridae that causes diseases with a long latent period and a slow, progressive course, as HIV.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.