branchial-arch

branchial arch

noun
1.
Zoology. one of a series of bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians; gill bar.
2.
Embryology. one of a series of archlike mesodermal thickenings of the body wall in the pharyngeal region of the embryo of amphibians, reptiles, birds, and mammals.
Also called gill arch, visceral arch.


Origin:
1870–75

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To branchial-arch
American Heritage
Medical Dictionary

branchial arch n.
Any of usually six embryonic arches that give rise to specialized structures in the head and neck in the higher vertebrates. Also called gill arch, pharyngeal arch, visceral arch.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature