| symphysis intervertebralis | The union between adjacent vertebral bodies composed of the nucleus pulposus, annular ligament, and the anterior and posterior longitudinal ligaments. Synonym: symphysis intervertebralis. (05 Mar 2000) |
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| symphysis mandibulae | The fibrocartilaginous union of the two halves of the mandible in the foetus; it becomes an osseous union during the first year. Synonym: symphysis mandibulae, symphysis mentalis, symphysis menti. (05 Mar 2000) |
| symphysis manubriosternalis | The later union, by fibrocartilage, of the manubrium and the body of the sternum; it begins as a synchondrosis and becomes a symphysis, occasionally fusing to become a synostosis. Synonym: symphysis manubriosternalis, sternomanubrial junction. (05 Mar 2000) |
| symphysis mentalis | The fibrocartilaginous union of the two halves of the mandible in the foetus; it becomes an osseous union during the first year. Synonym: symphysis mandibulae, symphysis mentalis, symphysis menti. (05 Mar 2000) |
| symphysis menti | The fibrocartilaginous union of the two halves of the mandible in the foetus; it becomes an osseous union during the first year. Synonym: symphysis mandibulae, symphysis mentalis, symphysis menti. (05 Mar 2000) |
| symphysis pubica | The joint between the pubic bones at the front of the pelvis. (12 Dec 1998) |
| symphysis pubis | The Greek word symphysis means growing together. The pubis are the pubic bone. So the symphysis pubis is where the pubic bones meet (in the front of the pelvis). (12 Dec 1998) |
| symphysis sacrococcygea | The cartilaginous articulation of the coccyx with the sacrum. Synonym: articulatio sacrococcygea, coccygeal joint, junctura sacrococcygea, sacrococcygeal junction, symphysis sacrococcygea. (05 Mar 2000) |
| symphysotomy | <surgery> The operation of dividing the symphysis pubis for the purpose of facilitating labour; formerly called the Sigualtian section. Alternative forms: symphysotomy. Origin: NL. Symphysis pubis + Gr. To cut. Source: Websters Dictionary (01 Mar 1998) |
| sympiesometer | A sensitive kind of barometer, in which the pressure of the atmosphere, acting upon a liquid, as oil, in the lower portion of the instrument, compresses an elastic gas in the upper part. The column of oil of a lower part BC of a glass tube compresses hydrogen gas in the upper part AB, and is thus measured on the scale pq by the position of a surface of the oil in the tube. The scale pq is adjustable, and its index must be set to the division on the scale rs corresponding to the temperature indicated by the termometer t, in order to correct for the effects of temperature on the gas. It is sensitive, and convenient for use at sea, but inferior in accuracy to the mercurial barometer. Origin: Gr. Compression (fr. To press together; with + to press, squeeze). Source: Websters Dictionary (01 Mar 1998) |
| symplasmatic | Relating to the union of protoplasm as in giant cell formation. Origin: G. Sym-plasso, to mold together (05 Mar 2000) |
| symplast | <plant biology> The intracellular compartment of plants, consisting of the cytosol of a large number of cells connected by plasmodesmata. (19 Jan 1998) |
| symplectic | <anatomy> Plaiting or joining together; said of a bone next above the quadrate in the mandibular suspensorium of many fishes, which unites together the other bones of the suspensorium. The symplectic bone. Origin: Gr. Plaiting together, fr. To plait together. Source: Websters Dictionary (01 Mar 1998) |
| symplectic metachronism | <cell biology> Type of synchrony found in the beating of cilia. A metachronal process is one that happens at a later time and the synchronisation is such that the active stroke of an adjacent cilium is slightly delayed so as to minimise the hydrodynamic interference, coordination is by visco mechanical coupling. Different patterns of metachronal synchronisation are recognised: Symplectic metachronism: the wave of activity in the field passes in the same direction as the active stroke of the individual cilium. Antiplectic metachronism: the opposite is true. In dexioplectic and laeoplectic metachronism the wave of activity in the field is normal to the beat axis. Symplectic and antiplectic metachronism are considered orthoplectic, the other forms as diaplectic. (05 Jan 1998) |
| sympode | <botany> A sympodium. Source: Websters Dictionary (01 Mar 1998) |