ganoine n 1: shiny substance that resemble enamel and is secreted by the corium of certain fishes (especially ganoid fishes) and composes the outer layer of their scales [syn: {ganoin}, {ganoine}]
Ganoine \Ga"no*ine\, n. (Zool.) A peculiar bony tissue beneath the enamel of a ganoid scale. [1913 Webster]