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The Collaborative International Dictionary
Epibranchial

Epibranchial \Ep`i*bran"chi*al\, a. [Pref. epi- + branchial.] (Anat.) Pertaining to the segment between the ceratobranchial and pharyngobranchial in a branchial arch. -- n. An epibranchial cartilage or bone.

Wiktionary
epibranchial

a. Pertaining to the segment between the ceratobranchial and pharyngobranchial in a branchial arch. n. An epibranchial cartilage or bone.