order Pectinibranchia or·der·pec·tinibranchia uncommon noun 1. large order of gastropods comprising univalve mollusks that have a single gill resembling a comb SynonymsPectinibranchiaorder Pectinibranchia Related words Broader terms animal order Parts Gastropoda Part of Cypraeidae WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
