Protostome Definition
prōttə-stōm
noun
Any of numerous invertebrate animals of the group Protostomia, in which the mouth develops from the first opening in the embryo and the anus develops later, and including the mollusks, annelids, and arthropods.
American Heritage Medicine
Other Word Forms of Protostome
Noun
Singular:
protostomePlural:
protostomesOrigin of Protostome
-
From New Latin Prōtostomia taxon name proto– New Latin stoma stoma
From American Heritage Dictionary of the English Language, 5th Edition
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