Any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales sharks

• Rays
• Skates

WordNet Word definitions in WordNet
n. any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates [syn: selachian ]

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

Wiktionary Word definitions in Wiktionary
n. Any of many cartilaginous fish of the subclass ''Elasmobranchii''

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1859, from Elasmobranchii , class of fishes that includes sharks and rays, from comb. form of Greek elasmos "metal plate," from elan "to strike" (see elastic ) + brankhia "gill."