| ganoid | (n) primitive fishes having thick bony scales with a shiny covering, Syn. ganoid fish |
| ganoidei | (n) a group of mostly extinct primitive bony fishes characterized by armor-like bony scales, Syn. order Ganoidei |
| ganoin | (n) 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. ganoine |
| Ganoid | a. [ Gr. &unr_; brightness + -oid. ] (Zool.) Of or pertaining to
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| Ganoidal | a. (Zool.) Ganoid. [ 1913 Webster ] |
| Ganoidei | ‖n. pl. [ NL. See Ganoid. ] (Zool.) One of the subclasses of fishes. They have an arterial cone and bulb, spiral intestinal valve, and the optic nerves united by a chiasma. Many of the species are covered with bony plates, or with ganoid scales; others have cycloid scales. [ 1913 Webster ] ☞ They were numerous, and some of them of large size, in early geological periods; but they are represented by comparatively few living species, most of which inhabit fresh waters, as the bowfin, gar pike, bichir, Ceratodus, paddle fish, and sturgeon. [ 1913 Webster ] |
| Ganoidian | a. & n. (Zool.) Ganoid. [ 1913 Webster ] |
| Ganoine | n. (Zool.) A peculiar bony tissue beneath the enamel of a ganoid scale. [ 1913 Webster ] |