Definition of Parasitism

an unhealthy relationship in which a parasite lives off another organism, usually causing damage in the process

Examples of Parasitism in a sentence

Parasitism is a one-sided biological relationship in which an organism weakens a host while obtaining resources from it.  🔊

In a flea-cat association, parasitism exists because the flea lives off the cat while damaging its immune system.  🔊

The worms that live in and irritate my dog’s gastrointestinal tract are a case of parasitism.  🔊

In parasitism, the pest acquires nourishment while living on or inside the host organism.  🔊

A leech obtaining sustenance by attaching itself to a human’s leg is an example of parasitism.  🔊

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