| ORD | optical rotatory dispersion; oral radiation death |
|---|---|
| OROS | oral osmotic |
| ORT | object relations technique; operating room technician; oral rehydration therapy |
| OS | left eye [Lat. oculus sinister]; occipitosacral; occupational safety; office surgery; Omenn syndrome... |
| OSCC | oral squamous cell carcinoma |
| cell surface marker | <cell biology> Any molecule characteristic of the plasma membrane of a cell or in some cases of a specific cell type. 5' nucleotidase and Na/K ATPase are often used as plasma membrane markers. (26 Mar 1998) |
|---|---|
| mediastinal surface of lung | The part of the medial surface of a lung in contact with the mediastinum. Synonym: pars mediastinalis pulmonis, facies mediastinalis pulmonis, mediastinal part of lung. (05 Mar 2000) |
| gluteal surface of ilium | The external surface of the wing of the ilium marked by the anterior, posterior and inferior gluteal lines that separate the origins of the gluteal muscles. Synonym: facies glutea ossis ilii. (05 Mar 2000) |
| pelvic surface of sacrum | The surface of the sacrum that faces downward and forward forming part of the posterior wall of the pelvic cavity. Synonym: facies pelvina ossis sacri. (05 Mar 2000) |
| cerebral surface | The internal surface of certain cranial bones; they are the greater wing of the sphenoid and the squamous part of the temporal bone. Synonym: facies cerebralis. (05 Mar 2000) |
| mesial surface of tooth | The contact surface of a tooth that is directed toward the median plane of the dental arch; opposite to the facies distalis dentis. Synonym: facies mesialis dentis. (05 Mar 2000) |
| grinding surface | That portion of the surface of a denture that makes contact or near contact with the corresponding surface of an opposing denture or tooth. Synonym: facies occlusalis dentis, facies masticatoria, grinding surface, masticating surface, masticatory surface, occlusal surface. (05 Mar 2000) |
| right part of diaphragmatic surface of liver | The part of the diaphragmatic surface of the liver deep to the bodies of the lower ribs on the right side. Synonym: pars dextra faciei diaphragmaticae hepatis. (05 Mar 2000) |
| middle talar articular surface of calcaneus | Underlies the head of the talus and contributes to the talocalcaneonavicular joint. Synonym: facies articularis talaris media calcanei. (05 Mar 2000) |
| mirror, first or front surface | <microscopy> An optical mirror on which the reflecting surface is applied to the front surface of the mirror instead of to the back, that is, to the first surface of incidence. (05 Aug 1998) |
| colic surface of spleen | The surface of the spleen in contact with the colon. Synonym: facies colica splenis. (05 Mar 2000) |
| plantar surface of toe | plantar surface of toe |
| contact surface of tooth | The surface of a tooth that faces an adjacent tooth in the dental arch; the contact surface that is closest to the anterior midline of the dental arch is the mesial surface of a tooth; that farthest is the distal surface. Synonym: facies approximalis dentis, facies contactus dentis. (05 Mar 2000) |
| costal surface | The surface of certain structures that face the ribs; they are the lungs and the scapula. Synonym: facies costalis. (05 Mar 2000) |
| costal surface of lung | The surface of each lung that lies in contact with the costal pleura. Synonym: facies costalis pulmonis. (05 Mar 2000) |