Percomorphi n 1: one of the largest natural groups of fishes of both marine and fresh water: true perches; basses; tuna [syn: {Perciformes}, {order Perciformes}, {Percomorphi}, {order Percomorphi}]
Percomorphi \Per`co*mor"phi\, n. pl. [NL., fr. L. perca perch + Gr. morfh` form.] (Zool.) A division of fishes including the perches and related kinds. [1913 Webster]