| SD | Sandhoff disease; senile dementia; septal defect; serologically defined; serologically detectable; s... |
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| SDS | same day surgery; school dental services; self-rating depression scale; sensory deprivation syndrome... |
| ADL | activities of daily living; Amsterdam Depression List; annual dose limit |
| ADR | activation, depression, repetition [in bone remodeling]; adrenodoxin reductase; Adriamycin; adverse ... |
| BCDRS | brief Carroll depression rating scale |
| depression, major | Major depression is manifested by a combination of symptoms (see Depression, symptoms of) that interfere with the ability to work, sleep, eat, and enjoy once pleasurable activities. These disabling episodes of depression can occur once, twice, or several times in a lifetime. (12 Dec 1998) |
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| depression of optic disk | The normally occurring depression or pit in the centre of the optic disc. Synonym: excavatio disci, depression of optic disk, excavatio papillae, physiologic cup, physiologic excavation. (05 Mar 2000) |
| depression, postpartum | Depression in women occurring usually within four weeks after the delivery of a child. The degree of depression ranges from mild transient depression to neurotic or psychotic depressive disorders. (12 Dec 1998) |
| involutional depression | Depression or psychosis first occurring in the involutional years (40 to 55 for women, 50 to 65 for men). (05 Mar 2000) |
| endogenous depression | <psychiatry> A clinical syndrome that includes a persistent sad mood or loss of interest in activities that persists for at least 2 weeks in the absence of external precipitants. This should not be confused with a grief reaction (death of loved one). Features may include change in eating habits, insomnia, early morning wakening, lack of interest, depressed mood, fatigue and suicidal thoughts. (27 Sep 1997) |
| exogenous depression | Similar signs and symptoms as endogenous depression but the precipitating factors are social or environmental and outside the individual. (05 Mar 2000) |
| lingual salivary gland depression | An indentation on the lingual surface of the mandible within which a portion of the submandibular gland lies; it appears radiographically as a sharply circumscribed ovoid radiolucency between the mandibular canal and the inferior border of the posterior mandible. Synonym: Stafne bone cyst, static bone cyst. (05 Mar 2000) |
| right triangular ligament | <anatomy> A triangular fold of peritoneum that passes from the right lobe of the liver to the diaphragm; it is a formation of the coronary ligament, formed as the coronary ligament makes an acute angle upon reaching its most lateral point on the right side as it surrounds the bare area of the liver. Synonym: ligamentum triangulare dextrum. (05 Mar 2000) |
| eminence of triangular fossa of auricle | <anatomy> The prominence on the cranial surface of the auricle corresponding to the triangular fossa. Synonym: eminentia fossae triangularis auricularis, agger perpendicularis, eminentia triangularis. (05 Mar 2000) |
| Trautmann's triangular space | The area of the temporal bone bounded by the sigmoid sinus, the superior petrosal sinus, and a tangent to the posterior saemicircular canal. (05 Mar 2000) |
| triangular | 1. Having three angles; having the form of a triangle. 2. <botany> Oblong or elongated, and having three lateral angles; as, a triangular seed, leaf, or stem. Triangular compasses, compasses with three legs for taking off the angular points of a triangle, or any three points at the same time. <zoology> Triangular crab, any maioid crab; so called because the carapace is usually triangular. <mathematics> Triangular numbers, the series of numbers formed by the successive sums of the terms of an arithmetical progression, of which the first term and the common difference are 1. See Figurate numbers, under Figurate. Origin: L. Triangularis: cf. F. Triangulaire. Source: Websters Dictionary (01 Mar 1998) |
| triangular bandage | A piece of cloth cut in the shape of a right-angled triangle, used as a sling. Synonym: scarf bandage. (05 Mar 2000) |
| triangular bone | An independent ossicle sometimes present in the tarsus; usually it forms part of the talus, constituting the lateral tubercle of the posterior process. Synonym: os triangulare, triangular bone. (05 Mar 2000) |
| triangular cartilage | The disk that holds together the distal ends of the radius and ulna; it is attached by its apex to a depression between the styloid process and distal surface of the head of the ulna, and by its base to the ridge separating the ulnar notch from the carpal surface of the radius. Synonym: discus articularis radioulnaris, radioulnar disk, radioulnar articular disk, triangular cartilage, triangular disk of wrist, triquetrous cartilage. (05 Mar 2000) |
| triangular crest | A crest or ridge which extends from the apex of a cusp of a premolar or molar tooth toward the central part of the occlusal surface. Synonym: triangular crest, triangular ridge. (05 Mar 2000) |