gill arch
noun Date: 1879 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

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • gill arch — n 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 …   Medical dictionary

  • gill arch — noun one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians • Syn: ↑branchial arch, ↑gill bar • Hypernyms: ↑structure, ↑anatomical structure, ↑complex body part, ↑bodily… …   Useful english dictionary

  • gill arch — the endochondral skeletal support of the gill which bears the gill filaments and the gill rakers. Consists of pharyngobranchials, epibranchials, ceratobranchials and hypobranchials. Usually 4 in teleosts, can be as many as 16 in some Cyclostomata …   Dictionary of ichthyology

  • gill arch — /gil/. See branchial arch. [1875 80] * * * …   Universalium

  • gill bar — noun one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians • Syn: ↑gill arch, ↑branchial arch • Hypernyms: ↑structure, ↑anatomical structure, ↑complex body part, ↑bodily… …   Useful english dictionary

  • gill raker — noun also gill rake Etymology: gill (III) : one of the bony processes on the inside of the branchial arches of fishes that help to prevent solid substances from being carried out through the branchial clefts * * * /gil/ (in fish) one of a series… …   Useful english dictionary

  • gill — 1) a paired respiratory organ in fishes consisting of gill filaments on the gill arch in the posterior portion of the head and usually providing the primary exchange of gases between the blood and the surrounding water 2) to catch a fish in a …   Dictionary of ichthyology

  • gill ray — branchial ray (the cartilaginous rod projecting out from the gill arch into the interbranchial septum which it supports and from the hyoid arch into the first hemibranch. Homologous with branchiostegal. Found in Elasmobranchii and Acanthodii) …   Dictionary of ichthyology

  • gill raker — noun Date: 1880 any of the bony processes on a gill arch that divert solid substances away from the gills …   New Collegiate Dictionary

  • gill filament — the thread like, soft, red respiratory and excretory structure projecting outward from the gill arch …   Dictionary of ichthyology

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