adjective. Relating to or being a kind of fish scale that is hard and bony with a shiny surface composed of an enamel-like substance.

adjective. Having ganoid scales.

noun. A fish having ganoid scales, such as a gar or sturgeon.

Having a smooth, shining surface, as if polished or enameled: specifically applied to those scales or plates of fishes which are generally of an angular form and composed of a bony or hard horny tissue overlaid with enamel. See cut under scale.

Having ganoid scales or plates, as a fish; specifically, of or pertaining to the Ganoidei: as, a ganoid fauna.

noun. One of the Ganoidei; a fish of the order Ganoidei.

adjective. Of or pertaining to Ganoidei. -- n. One of the Ganoidei.

adjective. 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.

noun. One of the Ganoidei, a taxonomic group of fishes.

noun. primitive fishes having thick bony scales with a shiny covering

"To him, the ganoid was a huge perplexity, none the less because neither he nor the ganoid troubled Darwinians, but the more because it helped to reveal that Darwinism seemed to survive only in England."