| parasitism | <biology, microbiology> A type of symbiosis where two (or more) organisms from different species live in close proximity to one another, in which one member depends on another for its nutrients, protection, and/or other life functions. The dependent member (the parasite) benefits from the relationship while the other one (the host) is harmed by it. (09 Oct 1997) |
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| multiple parasitism | A condition in which parasites of different species parasitise a single host, in contrast to superparasitism or hyperparasitism. (05 Mar 2000) |
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