| orbitale | In cephalometrics, the lowermost point in the lower margin of the bony orbit that may be felt under the skin. Origin: L. Of an orbit (05 Mar 2000) |
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| planum orbitale | The orbital surface of the maxilla, lying perpendicular to the orbitomeatal plane at the orbitale. Synonym: planum orbitale. (05 Mar 2000) |
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| septum orbitale | A fibrous membrane attached to the margin of the orbit and extending into the lids, containing the orbital fat and constituting in great part the posterior fascia of the orbicularis oculi muscle. Synonym: septum orbitale. (05 Mar 2000) |
| foramen zygomatico-orbitale | The common opening on the orbital surface of the zygomatic bone of the canals transmitting the zygomaticofacial and zygomaticotemporal nerves; sometimes each of these canals has a separate opening on the orbital surface. Synonym: foramen zygomatico-orbitale. (05 Mar 2000) |