| 释义 |
periotic, a. (n.) Anat.|pɛrɪˈɒtɪk|
[f. Gr. περί around + οὖς, ὠτ- the ear, ὠτικ-ός of the ear.]
Surrounding the ear: applied to those bones of the skull (prootic, epiotic, and opisthotic) which constitute a protective case or capsule for the internal ear; usually confluent or entirely fused, forming the petrosal or petromastoid portion of the temporal bone. ellipt. as n. A periotic bone.
1866Brande & Cox Dict. Sci. etc., Periotic Bones.., the bones which surround the internal ear, or labyrinth. 1870Rolleston Anim. Life 8 A conjugate foramen between the squamosal and the periotic. 1872Mivart Elem. Anat. 106 These three bony barriers protecting the internal ear may be conveniently spoken of as the periotic mass. |