polyplacophore

from The Century Dictionary.

• Bearing many plates, as a chiton; of or pertaining to the Polyplacophora.
• noun A member of the Polyplacophora; a chiton, or coat-of-mail shell.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective rare polyplacophoran
• noun rare polyplacophoran

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates