Source : Webster's Revised Unabridged Dictionary (1913)

Elasmobranch \E*las"mo*branch\, a. (Zo["o]l.)
   Of or pertaining to the Elasmobranchii. -- n. One of the
   Elasmobranchii.

Source : WordNet®

elasmobranch
     n : any of numerous fishes of the class Chondrichthyes
         characterized by a cartilaginous skeleton and placoid
         scales: sharks; rays; skates [syn: {selachian}]