from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Outside of the branchial arches.
from the GNU version of the Collaborative International Dictionary of English
- adj. Outside of the branchial arches; -- said of the cartilages thus placed in some fishes.
from The Century Dictionary and Cyclopedia
- Lying outside of or external to the branchial arches; forming the external support of the branchial septa.
- n. A term applied by W. K. Parker to certain cartilages which take part in the formation of supports for the divisions between the gill-chambers in tadpoles, lampreys, and sharks.
extra- + branchial (Wiktionary)