Meaning of polyclad

pol•y•clad

Pronunciation: (pol'ē-klad"), [key]
— n.
  1. any free-swimming, marine flatworm of the order Polycladida, having a broad, flat body and a many-branched gastrovascular cavity.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.