• (a.) Pertaining to the segment between the ceratobranchial and pharyngobranchial in a branchial arch. • (n.) An epibranchial cartilage or bone.
Ep`i·bran'chi·al adjective [ Prefix epi- + branchial .] (Anat.) Pertaining to the segment between the ceratobranchial and pharyngobranchial in a branchial arch. -- noun An epibranchial cartilage or bone.