| separation of teeth | Loss of proximal contact of teeth, in orthodontics, the creation of interproximal spaces for the fitting of an appliance. (05 Mar 2000) |
|---|---|
| separator | One who, or that which, separates. Specifically: A device for depriving steam of particles of water mixed with it. <chemical> An instrument used for spreading apart the threads of the warp in the loom, etc. Origin: L. Source: Websters Dictionary (01 Mar 1998) |
| separatory | 1. <chemistry> An apparatus used in separating, as a separating funnel. 2. <surgery> A surgical instrument for separating the pericranium from the cranium. Origin: Cf. F. Separatoire. Source: Websters Dictionary (01 Mar 1998) |
| separatrix | <radiobiology> In a divertor tokamak (and some other configurations), the last closed flux surface is formed not by inserting an object (limiter) but by manipulating the magnetic field, so that some field lines take a topologically different route (through the divertor, rather than simply around the central plasma). The boundary between the two types of field lines is called the separatrix. (09 Oct 1997) |
| seperator | <dentistry> A plastic or metal part which the orthodontist uses to create space between your teeth for bands. (08 Jan 1998) |
| Sephacryl | Trade name for a covalently cross linked allyl dextrose gel formed into beads. Used in gel filtration columns for separating molecules in the size range 5 kD to 1.5 million D. (18 Nov 1997) |
| Sephadex | Trade name for a cross linked dextran gel in bead form used for gel filtration columns: by varying the degree of cross linking the effective fractionation range of the gel can be altered. (18 Nov 1997) |
| Sepharose | Trade name for a gel of agarose in bead form from which charged polysaccharides have been removed. Used in gel filtration columns. (18 Nov 1997) |
| sephen | <zoology> A large sting ray of the genus Trygon, especially T. Sephen of the Indian Ocean and the Red Sea. The skin is an article of commerce. Source: Websters Dictionary (01 Mar 1998) |
| sepia | Origin: L, fr. Gr. The cuttlefish, or squid. 1. <zoology> The common European cuttlefish. A genus comprising the common cuttlefish and numerous similar species. 2. A pigment prepared from the ink, or black secretion, of the sepia, or cuttlefish. Treated with caustic potash, it has a rich brown colour; and this mixed with a red forms Roman sepia. Cf. India ink, under India. Sepia drawing or picture, a drawing in monochrome, made in sepia alone, or in sepia with other brown pigments. Source: Websters Dictionary (01 Mar 1998) |
| sepiapterin synthase | <enzyme> Dihydroneopterin is converted to sepiapterin in the presence of one or more enzymes Registry number: EC 1.1.- (26 Jun 1999) |
| sepidaceous | <zoology> Like or pertaining to the cuttlefishes of the genus Sepia. Source: Websters Dictionary (01 Mar 1998) |
| sepiolite | <chemical> Meerschaum. See Meerschaum. Origin: Septa. Source: Websters Dictionary (01 Mar 1998) |
| sepiostare | <zoology> The bone or shell of cuttlefish. Origin: Sepia + Gr. A bone. Source: Websters Dictionary (01 Mar 1998) |
| seprase | <enzyme> A large, gelatin-degrading membrane protease complex, may be a marker for melanoma cell invasiveness Registry number: EC 3.4.99.- Synonym: surface expressed protease (26 Jun 1999) |