Zool. [f. L. clupe-a a kind of small river-fish, taken as the name of the genus which includes the herring, pilchard, sprat, etc. + -OID.] A fish belonging to the herring family (Clupeidæ).
1880. Günther, Fishes, 117. The condition is more complicated in many Clupeoids.
1887. Athenæum, 9 July, 58/3. Mr. A. Smith-Woodward considered it [the genus Rhacolepis] an elopine clupeoid.