Endoparasite

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endoparasite

[¦en·dō′par·ə‚sīt]
(ecology)
A parasite that lives inside its host.

Endoparasite

 

a parasitic organism that inhabits the internal organs of its animal or plant host. Endoparasites include intracellular parasites, which inhabit specific cells in their host. They belong to the group of endotrophic organisms. Many have complex life cycles, which include changes of hosts. Endoparasites are found among fungi, bacteria, and most animal phyla and classes (except Echinodermata, Brachiopoda, and Chordata).