Noun: gill arch gil aa(r)ch
- One of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians
"The fish's gill arches provide structure and support for its delicate gill filaments";
- branchial arch, gill bar
Derived forms: gill arches
Type of: anatomical structure, bodily structure, body structure, complex body part, structure
Encyclopedia: Gill arch