prostomium
noun
the unsegmented, preoral portion of the head of certain lower invertebrates.
prostomial
-
a word derived from
prostomium.
Example Sentences
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FP, Rudimentary frontal processes perhaps representing the prostomial tentacles of Polychaeta.
From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" by Various
