selachian

adjective

1. belonging to the Selachii, a group of fishes comprising the sharks, skates, and rays.

noun

2. a selachian fish.

adjective

1. of, relating to, or belonging to the Selachii (or Elasmobranchii), a large subclass of cartilaginous fishes including the sharks, rays, dogfish, and skates

noun

2. any fish belonging to the subclass Selachii