Designating a bone in the lower part of the operculum of a fish; of or relating to this bone.

Situated above or in the upper part of the temporal region (of the head), the temporal bone (of the skull), or the temporal lobe (of the brain). Cf…

Forming or relating to a median posterior process or part of the hyoid arch in fishes or birds.

pertaining to the hyoid bone and the branchiæ.

Of or relating to the preoperculum.

(a) n. a small bone within and on each side of the skull in some vertebrates, esp. many amphibians and reptiles, typically associated with the…

Concave on both sides, double concave. Applied to vertebræ, as in the backbone of a fish.

Of or pertaining to, formed by combination of, the sphenoid bone and otic structures in certain fishes and in birds.

Situated between two parts of the hyoid arch of a fish.

pertaining to the tympanic bone and the malleus; applied to a bone in the skull of batrachians and fishes.