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1 definition found

From: Webster's Revised Unabridged Dictionary (1913)

 Di·œ·ci·a n. pl.
 1. Bot. A Linnæan class of plants having the stamens and pistils on different plants.
 2. Zool. A subclass of gastropod mollusks in which the sexes are separate. It includes most of the large marine species, like the conchs, cones, and cowries.