Source : Webster's Revised Unabridged Dictionary (1913)

Ichthyoid \Ich"thy*oid\, Ichthyoidal \Ich`thy*oid"al\, a. [Gr.
   ?: ?, ?, a fish + ? form.] (Zo["o]l.)
   Somewhat like a fish; having some of the characteristics of
   fishes; -- said of some amphibians.