| sincipital | <anatomy> Of or pertaining to the sinciput; being in the region of the sinciput. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| sincipital presentation | See: cephalic presentation. (05 Mar 2000) |
| sinciput | 1. <anatomy> The fore part of the head. 2. <zoology> The part of the head of a bird between the base of the bill and the vertex. Origin: L, half a head; semihalf + caput the head. Source: Websters Dictionary (01 Mar 1998) |
| Sindbis fever | A febrile illness of humans in Africa, Australia, and other countries, characterised by arthralgia, rash, and malaise; caused by the Sindbis virus, a member of the family Togaviridae, and transmitted by culicine mosquitoes. (05 Mar 2000) |
| Sindbis virus | <virology> Enveloped virus of the alphavirus group of Togaviridae. It is thought to be an infection of birds spread by fleas and there is little evidence that it causes any serious infection in humans. The synthesis and export of the spike proteins, via the endoplasmic reticulum and Golgi complex, have been used as a model for the synthesis and export of plasma membrane proteins. (18 Nov 1997) |
| sinding-larson-johansson disease | <radiology> Contusion and subsequent tendonitis in the proximal attachment of the patellar tendon, can be followed by calcification, ossification, or frank inferior pole avulsion fractures that produce one or more distinct ossicles. Symptoms: tenderness and soft tissue swelling over the lower pole of the patella, aggregated by activity X-ray findings: osseous fragmentation of patella (12 Dec 1998) |
| sindon | 1. A wrapper. "Wrapped in sindons of linen." 2. <surgery> A small rag or pledget introduced into the hole in the cranium made by a trephine. Origin: L, a kind of fine Indian cotton stuff, Gr. Source: Websters Dictionary (01 Mar 1998) |
| sine | <mathematics> The length of a perpendicular drawn from one extremity of an arc of a circle to the diameter drawn through the other extremity. The perpendicular itself. See Sine of angle, below. Artificial sines, logarithms of the natural sines, or logarithmic sines. Curve of sines. See Sinusoid. Natural sines, the decimals expressing the values of the sines, the radius being unity. Sine of an angle, in a circle whose radius is unity, the sine of the arc that measures the angle; in a right-angled triangle, the side opposite the given angle divided by the hypotenuse. See Trigonometrical function, under Function. Versed sine, that part of the diameter between the sine and the arc. Origin: LL. Sinus a sine, L. Sinus bosom, used in translating the Ar. Jaib, properly, bosom, but probably read by mistake (the consonants being the same) for an original jiba sine, from Skr. Jiva bowstring, chord of an arc, sine. Source: Websters Dictionary (01 Mar 1998) |
| sine condition | <microscopy> The design of a lens must fulfill this condition, described by Abbe, if the image is to be aplanatic. It states that the ratio of the sines of the angles of the incident and refracted rays to the axis must be constant, this constant is equal to the inverse of the magnification of the image. (05 Aug 1998) |
| SINES | <abbreviation> Short interspersed elements. (05 Mar 2000) |
| sinew | 1. <anatomy> A tendon or tendonous tissue. See Tendon. 2. Muscle; nerve. 3. That which supplies strength or power. "The portion and sinew of her fortune, her marriage dowry." (Shak) "The bodies of men, munition, and money, may justly be called the sinews of war." (Sir W. Raleigh) Money alone is often called the sinews of war. Origin: OE. Sinewe, senewe, AS. Sinu, seonu; akin to D. Zenuw, OHG. Senawa, G. Sehne, Icel. Sin, Sw. Sena, Dan. Sene; cf. Skr. Snava. Source: Websters Dictionary (01 Mar 1998) |
| sinew-shrunk | <veterinary> Having the sinews under the belly shrunk by excessive fatigue. Source: Websters Dictionary (01 Mar 1998) |
| sing-sing | <zoology> The kob. Source: Websters Dictionary (01 Mar 1998) |
| singe | 1. To burn slightly or superficially; to burn the surface of; to burn the ends or outside of; as, to singe the hair or the skin. "You sulphurous and thought-executing fires, . . . Singe my white head!" (Shak) "I singed the toes of an ape through a burning glass." (L'Estrange) 2. To remove the nap of (cloth), by passing it rapidly over a red-hot bar, or over a flame, preliminary to dyeing it. To remove the hair or down from (a plucked chicken or the like) by passing it over a flame. Origin: OE. Sengen, AS. Sengan in besengan (akin to D. Zengen, G. Sengen), originally, to cause to sing, fr. AS. Singan to sing, in allusion to the singing or hissing sound often produced when a substance is singed, or slightly burned. See Sing. Source: Websters Dictionary (01 Mar 1998) |
| singer's nodes | Small, circumscribed, bilateral, beadlike enlargements on the vocal cords caused by overuse or abuse of the voice; often reversible by voice therapy. Synonym: singer's nodes, singer's nodules, teachers' nodes. (05 Mar 2000) |