What does parasitized mean?
Parasitized is the past tense and past participle of parasitize, meaning to invade or inhabit an organism as a parasite. The host is the organism that provides nourishment or shelter, while the parasite benefits from the relationship, often at the host’s expense. The word is especially common in biology, medicine, and ecology, where it can describe a host invaded by a parasite, a cell exploited by another organism, or the broader process of parasitism. It is more precise than “infected,” which can refer to any infectious disease or contamination. In ordinary discussion, “parasitized” may describe people metaphorically when they are exploited by another person or organization, although this usage is less formal and usually carries a strongly negative implication.
To infect or inhabit an organism as a parasite, using it as a host.
"A parasitic wasp parasitized the caterpillar."
Common in scientific and formal contexts.
Having been invaded or inhabited by a parasite.
"The researchers examined the parasitized cells under a microscope."
Used as a participial adjective, especially in biological and medical writing.
A parasitized organism becomes the host in a biological bargain in which one participant benefits while the other pays the cost.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does parasitized come from?
The word was formed in English from parasite plus the suffix -ize, meaning “to make into” or “to treat as.” The English noun parasite comes through Latin from Greek parasitos, a term for someone who eats alongside another and depends on that person for food. Related English words include parasitic, parasitism, and parasitology, all sharing the same Greek and Latin roots.
Related word forms
How parasitized is actually used
This word is chiefly used in formal or scientific contexts, especially biology, medicine, and ecology. It is more specific than “infected,” which can refer to any infectious disease or contamination.
Easily confused with parasitized
Parasitic is an adjective describing something that lives on or in a host, whereas parasitized is a verb form or participle describing an organism that has been invaded by a parasite.
A parasite is the organism that obtains nourishment from a host; parasitized describes the act or result of being invaded by such an organism.