Onchidiidae
Also found in: Wikipedia.
Onchidiidae
[‚äŋ·kə′dī·ə‚dē] (invertebrate zoology)
An intertidal family of sluglike pulmonate mollusks of the order Systellommatophora in which the body is oval or lengthened, with the convex dorsal integument lacking a mantle cavity or shell.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.