[par-uh-si-tahyz, -sahy-]

verb (used with object), par·a·si·tized, par·a·si·tiz·ing.

to live on (a host) as a parasite.

Also especially British, par·a·si·tise.

Origin of parasitize

First recorded in 1885–90; parasite + -ize
Related formsun·par·a·si·tized, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for parasitize

Historical Examples of parasitize

British Dictionary definitions for parasitize



verb (tr)

to infest or infect with parasites
to live on (another organism) as a parasite
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

parasitize in Medicine


[părə-sĭ-tīz′, -sī-]


To live on or in a host as a parasite.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.