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prosobranchiata |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Prosobranchiata \Pros`o*bran`chi*a"ta\, n. pl [NL., fr Gr ? forward, further + ? a gill.] (Zo["o]l.) The highest division, or subclass, of gastropod mollusks, including those that have the gills situated anteriorly, or forward of the heart, and the sexes separate.