| sura | Synonym: sural region. Origin: L. (05 Mar 2000) |
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| suradanni | A valuable kind of wood obtained on the shores of the Demerara River in South America, much used for timbers, rails, naves and fellies of wheels, and the like. Source: Websters Dictionary (01 Mar 1998) |
| sural | <anatomy> Of or pertaining to the calf of the leg; as, the sural arteries. Origin: L. Sura the calf of the leg: cf. F. Sural. Source: Websters Dictionary (01 Mar 1998) |
| sural artery | <anatomy, artery> One of four or five arteries arising (sometimes by a common trunk) from the popliteal; distribution, muscles and integument of the calf; anastomoses, posterior tibial, medial, and lateral inferior genicular. Synonym: arteria suralis, artery of calf. (05 Mar 2000) |
| sural nerve | <anatomy, nerve> A branch of the tibial nerve which supplies sensory innervation to parts of the lower leg and foot. (12 Dec 1998) |
| sural region | The muscular swelling of the back of the leg below the knee, formed chiefly by the bellies of the gastrocnemius and soleus muscles. Synonym: regio suralis, sura, calf. (05 Mar 2000) |
| suralimentation | Synonym: hyperalimentation. Origin: Fr. Sur, fr. L. Super, above (05 Mar 2000) |
| suramin | <chemical> A polyanionic compound with an unknown mechanism of action. It is used parenterally in the treatment of african trypanosomiasis and it has been used clinically with diethylcarbamazine to kill the adult onchocerca. It has also been shown to have potent antineoplastic properties. Pharmacological action: antinematodal agent, antineoplastic agent, trypanocidal agents. Chemical name: 1,3,5-Naphthalenetrisulfonic acid, 8,8'-(carbonylbis(imino-3,1-phenylenecarbonylimino(4-methyl-3,1-phenylene)carbonylimino))bis- (12 Dec 1998) |
| suramin sodium | C51H34N6O23S6Na6; a complex derivative of urea; used in the treatment of trypanosomiasis, onchocerciasis, and pemphigus. (05 Mar 2000) |
| surangular | <anatomy, zoology> Above the angular bone; supra-angular; applied to a bone of the lower jaw in many reptiles and birds. The surangular bone. Origin: Pref. Sur- + angular. Source: Websters Dictionary (01 Mar 1998) |
| surcingle | 1. A belt, band, or girth which passes over a saddle, or over anything laid on a horse's back, to bind it fast. 2. The girdle of a cassock, by which it is fastened round the waist. Origin: OE. Sursengle, OF. Sursangle. See Sur-, and Cingle, Shingles. Source: Websters Dictionary (01 Mar 1998) |
| surculose | <botany> Producing suckers, or shoots resembling suckers. Origin: CF. L. Sucrulosus woody. See Surcle. Source: Websters Dictionary (01 Mar 1998) |
| surd | 1. Net having the sense of hearing; deaf. "A surd . . . Generation." 2. Unheard. 3. <mathematics> Involving surds; not capable of being expressed in rational numbers; radical; irrational; as, a surd expression or quantity; a surd number. 4. Uttered, as an element of speech, without tone, or proper vocal sound; voiceless; unintonated; nonvocal; atonic; whispered; aspirated; sharp; hard, as f, p, s, etc.; opposed to sonant. Origin: L. Surdus deaf (whence the meaning, deaf to reason, irrational), perhaps akin to E. Swart. Cf. Sordine. <mathematics> 1. A quantity which can not be expressed by rational numbers; thus, 2 is a surd. 2. A surd element of speech. See Surd. Source: Websters Dictionary (01 Mar 1998) |
| surdal | <mathematics> Same as Surd. Source: Websters Dictionary (01 Mar 1998) |
| surdity | Alternative term for deafness. Origin: L. Surditas (18 Nov 1997) |