The Collaborative International Dictionary
Tetrabranchiate
Tetrabranchiate \Tet`ra*bran`chi*ate\, a. [Tetra + branchiate.] (Zo["o]l.) Of or pertaining to the Tetrabranchiata. -- n. One of the Tetrabranchiata.
Wiktionary
tetrabranchiate
a. (context zoology English) Of or relating to the Tetrabranchiata. n. (context zoology English) Any of the Tetrabranchiata.