gill arch

Other forms: gill arches

Definitions of gill arch
  1. noun
    one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians
    synonyms: branchial arch, gill bar
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    type of:
    anatomical structure, bodily structure, body structure, complex body part, structure
    a particular complex anatomical part of a living thing
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