branchial arch definition July 23, 2017 AZ Dictionary Link to this page noun: See gill arch. any one of a number of bony looped structures which support the gills of fish one of several bony or cartilaginous arches for each region of the pharynx that offer the gills of fishes and aquatic amphibians View More How would you define branchial arch? All the definitions on AZdictionary were written by people just like you. Now's your chance to add your own! Your Full Name Your definition Post Definition
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