| sacrovaginal fold | The lower part of the sacrouterine fold. Synonym: plica rectovaginalis. (05 Mar 2000) |
|---|---|
| sacrovertebral | <anatomy> Of or pertaining to the sacrum and that part of the vertebral column immediately anterior to it; as, the sacrovertebral angle. Source: Websters Dictionary (01 Mar 1998) |
| sacrovesical fold | The fold of peritoneum in the male that bounds the rectovesical pouch laterally. Synonym: rectovesical fold. (05 Mar 2000) |
| sacrum | <anatomy> The triangular-shaped bone lying between the 5th lumbar vertebra and the coccyx (tailbone). It consists of 5 vertebrae fused together and it articulates on each side with the bones of the pelvis (ilium), forming the sacroiliac joints. (17 Dec 1997) |
| sacs | <ethnology> A tribe of Indians, which, together with the Foxes, formerly occupied the region about Green Bay, Wisconsin. Alternative forms: Sauks. Source: Websters Dictionary (01 Mar 1998) |
| SACT | <abbreviation> Sinoatrial conduction time. (05 Mar 2000) |
| sad | 1. Sated; satisfied; weary; tired. "Yet of that art they can not waxen sad, For unto them it is a bitter sweet." (Chaucer) 2. Heavy; weighty; ponderous; close; hard. "His hand, more sad than lump of lead." (Spenser) "Chalky lands are naturally cold and sad." (Mortimer) 3. Dull; grave; dark; somber; said of colours. "Sad-coloured clothes." "Woad, or wade, is used by the dyers to lay the foundation of all sad colours." (Mortimer) 4. Serious; grave; sober; steadfast; not light or frivolous. "Ripe and sad courage." "Which treaty was wisely handled by sad and discrete counsel of both parties." (Ld. Berners) 5. Affected with grief or unhappiness; cast down with affliction; downcast; gloomy; mournful. "First were we sad, fearing you would not come; Now sadder, that you come so unprovided." (Shak) "The angelic guards ascended, mute and sad." (Milton) 6. Afflictive; calamitous; causing sorrow; as, a sad accident; a sad misfortune. 7. Hence, bad; naughty; troublesome; wicked. "Sad tipsy fellows, both of them." Sad is sometimes used in the formation of self-explaining compounds; as, sad-coloured, sad-eyed, sad-hearted, sad-looking, and the like. Sad bread, heavy bread. Synonym: Sorrowful, mournful, gloomy, dejected, depressed, cheerless, downcast, sedate, serious, grave, grievous, afflictive, calamitous. Origin: OE. Sad sated, tired, satisfied, firm, steadfast, AS. Saed satisfied, sated; akin to D. Zat, OS. Sad, G. Tt, OHG. Sat, sar, saddr, Goth. Saps, Lith. Sotus, L. Sat, satis, enough, satur sated, Gr. To satiate enough. Cf. Assets, Sate, Satiate, Satisfy Satire. Source: Websters Dictionary (01 Mar 1998) |
| saddle | 1. A seat for a rider, usually made of leather, padded to span comfortably a horse's back, furnished with stirrups for the rider's feet to rest in, and fastened in place with a girth; also, a seat for the rider on a bicycle or tricycle. 2. A padded part of a harness which is worn on a horse's back, being fastened in place with a girth. It serves various purposes, as to keep the breeching in place, carry guides for the reins, etc. 3. A piece of meat containing a part of the backbone of an animal with the ribs on each side; as, a saddle of mutton, of venison, etc. 4. A block of wood, usually fastened to some spar, and shaped to receive the end of another spar. 5. <machinery> A part, as a flange, which is hollowed out to fit upon a convex surface and serve as a means of attachment or support. 6. <zoology> The clitellus of an earthworm. 7. The threshold of a door, when a separate piece from the floor or landing; so called because it spans and covers the joint between two floors. <medicine> Saddle bar, any thin plicated bivalve shaell of the genera Placuna and Anomia; so called from its shape. Synonym: saddle oyster. Origin: OE. Sadel, AS. Sadol; akin to D. Zadel, G. Sattel, OHG. Satal, satul, Icel. Sothull, Dan. & Sw. Sadel; cf. Russ. Siedlo; all perh. Ultimately from the root of E. Sit. Source: Websters Dictionary (01 Mar 1998) |
| saddle anaesthesia | A form of spinal anaesthesia limited in area to the buttocks, perineum, and inner surfaces of the thighs. Synonym: saddle anaesthesia. (05 Mar 2000) |
| saddle block anaesthesia | A form of spinal anaesthesia limited in area to the buttocks, perineum, and inner surfaces of the thighs. Synonym: saddle anaesthesia. (05 Mar 2000) |
| saddle embolism | A straddling embolism at any vascular bifurcation, e.g., of the aorta which occludes both common iliac arteries. Synonym: pantaloon embolism. (05 Mar 2000) |
| saddle head | Craniosynostosis in which the upper surface of the skull is concave, presenting a saddle-shaped appearance in profile. Synonym: saddle head. Origin: clino-+ G. Kephale, head (05 Mar 2000) |
| saddle joint | A biaxial synovial joint in which the double motion is effected by the opposition of two surfaces, each of which is concave in one direction and convex in the other; as in the carpometacarpal joint of the thumb. Synonym: articulatio sellaris, articulatio ovoidalis. (05 Mar 2000) |
| saddle nose | A nose with markedly depressed bridge, seen in congenital syphilis or after injury from trauma or operation. (05 Mar 2000) |
| saddle-backed | 1. Having the outline of the upper part concave like the seat of a saddle. 2. Having a low back and high neck, as a horse. Source: Websters Dictionary (01 Mar 1998) |