pectinid
/ˈpɛktɪnɪd/Zoology and Palaeontology
noun
A marine bivalve mollusc of the family Pectinidae; a scallop.
adjective
Of, relating to, or designating the family Pectinidae of marine bivalve molluscs.
Origin
Late 19th century; earliest use found in Isaac Funk (1839–1912), publisher and reformer. From scientific Latin Pectinidae, family name (1839 in Penny Cycl. XIII. 283/1; compare earlier Pectinida, and also Pectinideae, Pectinides, and French pectinidées, pectinides) from Pectin-, stem of Pecten, genus name of the scallop + -idae. With the adjective compare earlier pectinoid.