| saccus lacrimalis | The upper portion of the nasolacrimal duct into which empty the two lacrimal canaliculi; empty. Synonym: saccus lacrimalis, dacryocyst, sacculus lacrimalis, tear sac. (05 Mar 2000) |
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| saccus reuniens | A cavity at the caudal end of the embryonic cardiac tube in which the veins from the intra-and extraembryonic circulatory arcs unite; in the course of development it forms the portion of the right atrium known in adult anatomy as the sinus of the vena cava. Synonym: saccus reuniens. Sinus venosus sclerae, the vascular structure encircling the anterior chamber of the eye and through which the aqueous is returned to the blood circulation. Synonym: circular sinus, Fontana's canal, Lauth's canal, Schlemm's canal, sinus circularis, venous sinus of sclera. (05 Mar 2000) |
| saccus vaginalis | <embryology, urology> An embryonic peritoneal fossa indicating the site where the processus vaginalis peritonei extends through the anterior abdominal wall during descent of the testis. (05 Mar 2000) |
| Sachs' bacillus | A species found in malignant oedema of animals, in human war wounds, and in cases of appendicitis; it is pathogenic for guinea pigs, rabbits, mice, and pigeons and produces an exotoxin that is lethal and haemolytic. Synonym: Ghon-Sachs bacillus, Sachs' bacillus, vibrion septique. (05 Mar 2000) |
| Sachs, Bernard | <person> U.S. Neurologist, 1858-1944. See: Tay-Sachs disease. (05 Mar 2000) |
| Sachs, Hans | <person> German bacteriologist, 1877-1945. See: Sachs-Georgi test. (05 Mar 2000) |
| Sachs, M | <person> See: Sachs' bacillus, Ghon-Sachs bacillus. (05 Mar 2000) |
| Sachs, Maurice | <person> U.S. Radiologist, *1909. See: Hill-Sachs lesion. (05 Mar 2000) |
| Sachs-Georgi test | The first precipitin test for syphilis of diagnostic practicality, the significant innovation having been the addition of cholesterol to the lipoidal antigen (alcoholic tissue extract) used in the earlier Meinicke test. (05 Mar 2000) |
| sack | To plunder or pillage, as a town or city; to devastate; to ravage. "The Romans lay under the apprehension of seeing their city sacked by a barbarous enemy." (Addison) Origin: See Sack pillage. 1. A bag for holding and carrying goods of any kind; a receptacle made of some kind of pliable material, as cloth, leather, and the like; a large pouch. 2. A measure of varying capacity, according to local usage and the substance. The American sack of salt is 215 pounds; the sack of wheat, two bushels. 3. [Perhaps a different word] Originally, a loosely hanging garnment for women, worn like a cloak about the shoulders, and serving as a decorative appendage to the gown; now, an outer garment with sleeves, worn by women; as, a dressing saek. Alternative forms: sacque. 4. A sack coat; a kind of coat worn by men, and extending from top to bottom without a cross seam. 5. <biology> See Sac. <zoology> Sack bearer . See Basket worm, under Basket. <botany> Sack tree, an East Indian tree (Antiaris saccidora) which is cut into lengths, and made into sacks by turning the bark inside out, and leaving a slice of the wood for a bottom. To give the sack to or get the sack, to discharge, or be discharged, from employment; to jilt, or be jilted. Origin: OE. Sak, sek, AS. Sacc, saecc, L. Saccus, Gr. From Heb. Sak; cf. F. Sac from the Latin. Cf. Sac, Satchel, Sack to plunder. Source: Websters Dictionary (01 Mar 1998) |
| sack-winged | <zoology> Having a peculiar pouch developed near the front edge of the wing; said of certain bats of the genus Saccopteryx. Source: Websters Dictionary (01 Mar 1998) |
| Sacks, Benjamin | <person> U.S. Physician, 1896-1939. See: Libman-Sacks endocarditis, Libman-Sacks syndrome. (05 Mar 2000) |
| sacrad | In the direction of the sacrum. Origin: sacr-+ L. Ad, to (05 Mar 2000) |
| sacral | <anatomy> Of or pertaining to the sacrum; in the region of the sacrum. Source: Websters Dictionary (01 Mar 1998) |
| sacral agenesis | <radiology> Agenesis or hypoplasia of sacrum, part of caudal-regression syndrome, associated with maternal diabetes, with or without inherited, possible features: absent lower extremities, bladder/bowel impairment (12 Dec 1998) |