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Webster 1913 Edition
Branchial
Bran′chi-al
,Adj.
(Anat.)
Of or pertaining to branchiæ or gills.
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.