What does parasitize mean?
To parasitize is to live as a parasite on or inside another organism, taking nourishment or other resources from it and using it as a host. The verb commonly appears in descriptions of biological relationships: ticks parasitize animals, lice parasitize the scalp, and fungal or parasitic organisms may parasitize plants. Because the host is harmed or exploited, the word has an inherently negative tone. Figuratively, to parasitize a person or organization means to depend unfairly on that person or group's work, status, or resources. This extended use often suggests an intrusive or opportunistic relationship rather than simple assistance. Although parasitize is chiefly a technical term, its figurative sense has a clear critical force and distinguishes the active exploitation involved from the more general condition of being a parasite.
verbTo live as a parasite on or in another organism, using that organism as a host.
- To live on or in a host organism as a parasite, obtaining nourishment or other resources from it.
"Ticks parasitize livestock, feeding on their blood."
"Lice can parasitize the scalp and feed on blood."
"The critic was accused of parasitizing the younger writer's talent by attaching himself to her career."
The word's ancestor comes from Greek for a diner who ate at someone else's table: the original “parasite” was literally a fellow guest at another person's food.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does parasitize come from?
Parasitize is a 19th-century verb formed from parasite with the suffix -ize. Parasite comes through Latin from Greek parasitos, a term for a person who ate beside or at another person's table, derived from para, meaning “beside,” and sitos, meaning “food.” The same root underlies parasitic, parasitism, and antiparasitic.
How parasitize is actually used
The verb is most common in biological or medical contexts and usually takes a host, organism, or person as its object. In figurative use, it carries a strongly negative connotation of exploiting someone else's work, position, or resources.
Easily confused with parasitize
Parasitize is a verb describing the act of living on or in a host, whereas parasitic is an adjective describing an organism, process, or relationship of that kind.