Source : Webster's Revised Unabridged Dictionary (1913)

Branchiate \Bran"chi*ate\, a. (Anat.)
   Furnished with branchi[ae]; as, branchiate segments.

Source : WordNet®

branchiate
     adj : provided with gills; "a gilled tadpole" [syn: {gilled}]
           [ant: {abranchiate}]