Definition of pectinibranch in US English:

pectinibranch

adjective

Zoology
  • Relating to, characterized by, or designating a type of gill structure found in mesogastropod and neogastropod molluscs, in which parallel filaments are borne along one side of the gill axis; (of a gill) monopectinate. Also: of or relating to a subclass or order Pectinibranchia in which these molluscs are placed in some classifications.

noun

Zoology
  • A pectinibranch mollusc. Now rare.

Origin

Late 19th century; earliest use found in The Century Dictionary. From pectini- + -branch, after French pectinibranche.

Pronunciation

pectinibranch

/pɛkˈtɪnɪbraŋk/