| flat plate | Jargon for plain film. (05 Mar 2000) |
|---|---|
| floor plate | Ventral midline thinning of the developing neural tube, a continuity between the basal laminae of either side; opposite of roof plate. Synonym: ventral plate. (05 Mar 2000) |
| lateral plate | A nonsegmented mass of mesoderm on the lateral periphery of the embryonic disk. (05 Mar 2000) |
| lateral plate mesoderm | The peripheral thinned-out portion of intraembryonic mesoderm which is continuous with the extraembryonic mesoderm beyond the margins of the embryonic disk; in it develops the intraembryonic celom. Synonym: lateral mesoderm. (05 Mar 2000) |
| lateral plate of pterygoid process | The larger and more lateral of the two bony plates extending downward from the point of union of the body and greater wing of the sphenoid bone on either side; forms medial wall of intfratemporal fossa and gives origin to pterygoi muscles. Synonym: lamina lateralis processus pterygoidei, lateral plate of pterygoid process. (05 Mar 2000) |
| lateral pterygoid plate | The larger and more lateral of the two bony plates extending downward from the point of union of the body and greater wing of the sphenoid bone on either side; forms medial wall of intfratemporal fossa and gives origin to pterygoi muscles. Synonym: lamina lateralis processus pterygoidei, lateral plate of pterygoid process. (05 Mar 2000) |
| frontal plate | In the foetus, a cartilage plate between the lateral parts of ethmoid cartilage and the developing sphenoid bone. (05 Mar 2000) |
| lingual plate | A partial denture major connector formed as a lingual bar extended to cover the cingula of the lower anterior teeth. Synonym: lingual plate. (05 Mar 2000) |
| Aeby's plane | In craniometry, a plane perpendicular to the median plane of the cranium, cutting the nasion and the basion. (05 Mar 2000) |
| aperture plane | <microscopy> In a microscope adjusted for Koehler illumination, the conjugate planes that include the light source, the condenser iris diaphragm, the objective lens back aperture, and the eye point. Spaces in the aperture planes are the reciprocal of those in the field planes. (05 Aug 1998) |
| auriculo-infraorbital plane | A standard craniometric reference plane passing through the right and left porion and the left orbitale; drawn on the profile radiograph or photograph from the superior margin of the acoustic meatus to the orbitale. Synonym: auriculo-infraorbital plane, eye-ear plane, Frankfort horizontal plane, Frankfort plane, infraorbitomeatal plane. (05 Mar 2000) |
| axial plane | Transverse plane, as in CT scanning. Synonym: transaxial plane. (05 Mar 2000) |
| axiolabiolingual plane | A plane parallel to the long axis of a tooth and extending in a labiolingual direction. (05 Mar 2000) |
| axiomesiodistal plane | A plane parallel to the long axes of the teeth and extending in a mesiodistal direction. (05 Mar 2000) |
| back focal plane | <microscopy> The plane, normal to the lens axis, situated at the back focus of a lens. (05 Aug 1998) |