| pectinibranchia | (n) large order of gastropods comprising univalve mollusks that have a single gill resembling a comb, Syn. order Pectinibranchia |
| Pectinibranch | n. (Zool.) One of the Pectinibranchiata. Also used adjectively. [ 1913 Webster ] |
| Pectinibranchiata | ‖n. pl. [ NL. See Pecten, and Branchia. ] (Zool.) A division of Gastropoda, including those that have a comblike gill upon the neck. [ 1913 Webster ] |
| Pectinibranchiate | a. [ L. pecten, -inis, a comb + E. branchiate. ] (Zool.) Having pectinated gills. [ 1913 Webster ] |