protostome

About 0.01 uses per million words.

Meaning

1. noun Any animal, of the taxon Protostomia, in which the mouth is derived from the embryonic blastopore

Similar words

proteostome protostomian protostoma merostome platyzoan pseudostome actinostome prostomium premetazoan stomatodaeum

Often followed by

and phyla evolution animals line groups lineage

Word family

protostomes