Source : Webster's Revised Unabridged Dictionary (1913)

Veneracea \Ven`e*ra"ce*a\, n. pl. [NL. See {Venus}.] (Zo["o]l.)
   An extensive tribe of bivalve mollusks of which the genus
   {Venus} is the type. The shells are usually oval, or somewhat
   heartshaped, with a conspicuous lunule. See {Venus}.