ectoparasite

noun

ec·to·par·a·site | \ˌek-tō-ˈper-ə-ˌsīt,

-ˈpa-rə-\

Definition of ectoparasite

: a parasite that lives on the exterior of its host

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Mature sea lice are gray, lentil-sized crustaceans, also called ectoparasites, that look like small, fanged tadpoles. — Amanda Little, WIRED, "The Laser Battle Against Blood-Sucking Parasites of the Deep," 23 May 2018 All the cats had irritated, painful ears consistent with a contagious ectoparasite, the document stated. — Jennifer Stockinger, Twin Cities, "MN home condemned, woman charged after 30 sick, flea-ridden cats found," 23 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ectoparasite.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.