Pronunciation: pros'tho-gon'i-mus ma-kror'kis
A digenetic trematode (family Prosthogonimidae) located in the oviduct and bursa fabricii of poultry in North America, particularly common in those states bordering the Great Lakes.
[G. prosthe, in front of, + gonos, seed, offspring; macro- + orchis, testicle]
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Examples: glitazone, GI cocktail, etc.