a. Anat. [f. EPI- + HY(OID) + -AL.] That is placed upon the hyoid bone. Applied to the upper part of the hyoid arch; also, to a bone found in certain fishes.
1854. Owen, Skel. & Teeth (1855), 17. The hæmapophysis is a broader, slightly arched bone; the upper division is called epihyal.
1880. Günther, Fishes, 58. It consists of three segments, the epihyal, ceratohyal, which is the longest and strongest piece, [etc.].
1881. Mivart, Cat, 78. To the end of this is again annexed another long bone, called the epihyal.
