Definitions

from The Century Dictionary.

  • Posterior and otic; of or pertaining to the opisthotic: correlated with epiotic, proötic, and pterotic. See otic.
  • noun The postero-inferior petrosal bone; one of the otic elements, the posterior and inferior ossification of the periotic capsule, which contains the essential auditory apparatus, forming a part of the petrosal or petromastoid bone. See cuts under Crocodilia and Esox.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Anat.) The inferior and posterior of the three elements forming the periotic bone.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun anatomy The inferior and posterior of the three elements forming the periotic bone.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Ancient Greek behind + ear.

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Examples

  • The first relatively complete exoccipital-opisthotic from the braincase of the Callovian pliosaur, Liopleurodon.

    Life in the Oxford Clay sea Darren Naish 2006

  • The first relatively complete exoccipital-opisthotic from the braincase of the Callovian pliosaur, Liopleurodon.

    Archive 2006-07-01 Darren Naish 2006

  • A second (opisthotic) appears at the promontory on the medial wall of the tympanic cavity and surrounds the fenestra cochleæ; it forms the floor of the tympanic cavity and vestibule, surrounds the carotid canal, invests the lateral and lower part of the cochlea, and spreads medially below the internal acoustic meatus.

    II. Osteology. 5a. 4. The Temporal Bone 1918

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