gill arch

noun

Definition of gill arch

1 : any of the bony or cartilaginous arches or curved bars extending dorsoventrally and placed one behind the other on each side of the pharynx and supporting the gills of fishes and amphibians

2 : any of the rudimentary ridges in the embryos of all higher vertebrates that correspond to the gill arches

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First Known Use of gill arch

1879

in the meaning defined at sense 1

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Medical Dictionary

gill arch

noun

medical Definition of gill arch

: one of the bony or cartilaginous arches or curved bars extending dorsoventrally and placed one behind the other on each side of the pharynx and supporting the gills of fishes and amphibians; also : branchial arch