coracidium
Pronunciation: kor′ă-sid′ē-ŭm
Definition: The ciliated first-stage aquatic embryo of pseudophyllid and other cestodes with aquatic cycles; within the ciliated embryophore is a hooked larva, the hexacanth, which develops in the intermediate host, usually an aquatic crustacean, into the next larval stage, the procercoid.
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Examples: glitazone, GI cocktail, etc.

