selachian /sɪˈleɪkɪən/

• 1. 

  ADJ of, relating to, or belonging to the Selachii (or Elasmobranchii), a large subclass of cartilaginous fishes including the sharks, rays, dogfish, and skates 板鳃类的

• 2. 

  N any fish belonging to the subclass Selachii 板鳃类鱼