Ga·noid a. Zool. Of or pertaining to Ganoidei. -- n. One of the Ganoidei.
Ganoid scale Zool., one kind of scales of the ganoid fishes, composed of an inner layer of bone, and an outer layer of shining enamel. They are often so arranged as to form a coat of mail.
n : primitive fishes having thick bony scales with a shiny
covering [syn: ganoid fish]