'Branchial' definitions:

Definition of 'branchial'

(from WordNet)
adjective
Of or relating to gills (or to parts of the body derived from embryonic gills)

Definition of 'Branchial'

From: GCIDE
  • Branchial \Bran"chi*al\, a. (Anat.) Of or pertaining to branchi[ae] or gills. [1913 Webster]
  • Branchial arches, the bony or cartilaginous arches which support the gills on each side of the throat of fishes and amphibians. See Illustration in Appendix.
  • Branchial clefts, the openings between the branchial arches through which water passes. [1913 Webster]