| AHS | Academy of Health Sciences; African horse sickness; alveolar hypoventilation syndrome; American Hear... |
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| AHSDF | area health service development fund |
| AIM | Abridged Index Medicus; acute transverse myelopathy; area of interest magnification; artificial inte... |
| AL | angiographic area of lateral projection |
| ALAO | angiographic area of left anterior oblique projection |
| denture-bearing area | That portion of the basal seat which supports the complete or partial denture base under occlusal load. Synonym: basal seat, denture-bearing area, denture-supporting area, stress-bearing area, supporting area, tissue-bearing area. (05 Mar 2000) |
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| denture foundation area | That portion of the basal seat which supports the complete or partial denture base under occlusal load. Synonym: basal seat, denture-bearing area, denture-supporting area, stress-bearing area, supporting area, tissue-bearing area. (05 Mar 2000) |
| denture-supporting area | That portion of the basal seat which supports the complete or partial denture base under occlusal load. Synonym: basal seat, denture-bearing area, denture-supporting area, stress-bearing area, supporting area, tissue-bearing area. (05 Mar 2000) |
| dermatomic area | The area of skin innervated by a single posterior spinal nerve (sensory nerve). (27 Sep 1997) |
| disturbed area | <ecology> An area where vegetation, soil and/or hydrology have been significantly altered, thereby making a wetland determination difficult. (11 Jan 1998) |
| impression area | In dentistry, that surface which is recorded in an impression. (05 Mar 2000) |
| inferior vestibular area | The area of the fundus of the internal acoustic meatus inferior to the transverse crest through which the interior portion of the vestibular (saccular) nerve passes. Synonym: area vestibularis inferior. (05 Mar 2000) |
| insular area | 1. An oval region of the cerebral cortex overlying the extreme capsule, lateral to the lenticular nucleus, buried in the depth of the fissura lateralis cerebri (sylvian fissure). Synonym: insular area, insular cortex, island of Reil. Synonym: island. 3. Any circumscribed body or patch on the skin. Origin: L. Island (05 Mar 2000) |
| olfactory area | A region at the base of the brain through which numerous small branches of the anterior and middle cerebral arteries (lenticulostriate arteries) enter the depth of the cerebral hemisphere; it is bordered medially by the optic chasm and anterior half of the optic tract, rostrally and laterally by the lateral olfactory stria; its anteromedial part corresponds to the olfactory tubercle. Synonym: substantia perforata anterior, locus perforatus anticus, olfactory area. (05 Mar 2000) |
| oval area of Flechsig | A compact bundle composed of descending branches of posterior root fibres located near the border between the fasciculi gracilis and cuneatus of the cervical and thoracic spinal cord; it corresponds to the septomarginal fasciculus, Hoche's tract, or oval area of Flechsig in the lumbar, and to the triangle of Philippe-Gombault in the sacral spinal segments; like these, it can be demonstrated only in cases of demyelination resulting from dorsal root lesions. Synonym: fasciculus semilunaris, fasciculus interfascicularis, comma bundle of Schultze, comma tract of Schultze, interfascicular fasciculus. (05 Mar 2000) |
| tissue-bearing area | That portion of the basal seat which supports the complete or partial denture base under occlusal load. Synonym: basal seat, denture-bearing area, denture-supporting area, stress-bearing area, supporting area, tissue-bearing area. (05 Mar 2000) |
| embryonal area | Embryonic area, the area of the blastoderm on either side of, and immediately cephalic to, the primitive streak where the component cell layers have become thickened. (05 Mar 2000) |
| entorhinal area | Brodmann's area 28, a cytoarchitecturally well-defined area of multilaminate cerebral cortex on the medial aspect of the parahippocampal gyrus, immediately caudal to the olfactory cortex of the uncus; the area is the origin of the major fibre system afferent to the hippocampus, the so-called perforant pathway. (05 Mar 2000) |
| tricuspid area | The region of the chest wall over the lower part of the body of the sternum, where the sounds produced at the tricuspid valve are heard most distinctly. (05 Mar 2000) |
| trigger area | A specific point or area where, if stimulated by touch, pain, or pressure, a painful response will be induced. Synonym: dolorogenic zone, trigger area, trigger zone. (05 Mar 2000) |