| RGC | radio-gas chromatography; remnant gastric cancer; retinal ganglion cell; right giant cell |
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| RS | radioscaphoid; random sample; rating schedule; Raynaud syndrome; recipient's serum; rectal sinus; re... |
| RVG | right ventral glutens [muscle]; right visceral ganglion |
| SCG | serum chemistry graft; serum chemogram; sodium cromoglycate; superior cervical ganglion |
| TG | tendon graft; testosterone glucuronide; tetraglycine; thioglucose; thioglycolate; thioguanine; throm... |
| germinal area | Area germinativa, the place in the blastoderm where the embryo begins to be formed. Synonym: germinal disk. (05 Mar 2000) |
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| parolfactory area | A small region of cerebral cortex on the medial surface of the frontal lobe, formed by the junction of the straight gyrus with the cingulate gyrus, demarcated from the subcallosal gyrus by the posterior parolfactory sulcus. Synonym: area parolfactoria, Broca's parolfactory area. (05 Mar 2000) |
| vestibular area | More specifically look at: inferior vestibular area, superior vestibular area. (05 Mar 2000) |
| catchment area | <epidemiology> A geographic area defined and served by a health program or institution. (12 Dec 1998) |
| relative basal area | An estimate of basal area for trees, such as produced by the Bitterlich sampling technique. (09 Oct 1997) |
| relief area | In dentistry, the portion of the denture-bearing area over which the denture base is altered to reduce functional pressure. (05 Mar 2000) |
| visual area | Area of the occipital lobe concerned with vision. (12 Dec 1998) |
| pear-shaped area | A cushioned mass of tissue, frequently pear-shaped, located on the alveolar process of the mandible behind the area of the last natural molar tooth. Synonym: pear-shaped area. (05 Mar 2000) |
| medically underserved area | A geographic location which has insufficient health resources (manpower and/or facilities) to meet the medical needs of the resident population. (12 Dec 1998) |
| Celsus' area | <dermatology> An obsolete term for alopecia areata. (05 Mar 2000) |
| rest area | The portion of a tooth structure or of a restoration in a tooth that is prepared to receive the positive seating of the metallic occlusal, incisal, lingual, or cingulum rest of a removable prosthesis. Synonym: rest seat. (05 Mar 2000) |
| retention area | An area of a tooth provided during its preparation for restoration that will aid in holding the restoration in place. See: retention groove, retention point. (05 Mar 2000) |
| peristriate area | Area of the occipital lobe concerned with vision. (12 Dec 1998) |
| riparian area | An area of land directly influenced by water. An ecosystem that is transitional between land and water ecosystems. Riparian areas usually have visible vegetative or physical characteristics reflecting the influence of water. River sides, lake borders, and marshes are typical riparian areas. (05 Dec 1998) |
| Rolando's area | Area of the frontal lobe concerned with primary motor control. It lies anterior to the central sulcus. (12 Dec 1998) |