Source : Webster's Revised Unabridged Dictionary (1913)

Siluroid \Si*lu"roid\, n. [Silurus + -oid.] (Zo["o]l.)
   Belonging to the Siluroidei, or Nematognathi, an order of
   fishes including numerous species, among which are the
   American catfishes and numerous allied fresh-water species of
   the Old World, as the sheatfish ({Silurus glanis}) of Europe.
   -- n. A siluroid fish.