gill arch

Noun
  1. One of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians (synset 102513934)
    is a type of: anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing and its construction and arrangement
    same as: branchial arch, gill bar

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