Spiodea

Spi`o´de`a


n. pl.1.(Zool.) An extensive division of marine Annelida, including those that are without oral tentacles or cirri, and have the gills, when present, mostly arranged along the sides of the body. They generally live in burrows or tubes.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.