Ganoid

from WordNet (r) 3.0 (2006)

ganoid
    n 1: primitive fishes having thick bony scales with a shiny
         covering [syn: {ganoid}, {ganoid fish}]

from The Collaborative International Dictionary of English v.0.48

Ganoid \Ga"noid\, a. [Gr. ? brightness + -oid.] (Zool.)
   Of or pertaining to Ganoidei. -- n. One of the Ganoidei.
   [1913 Webster]

   {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.
      [1913 Webster]