| twist form | See: Haworth conformational formulas of cyclic sugars. (05 Mar 2000) |
|---|---|
| twisted | Contorted; crooked spirally; subjected to torsion; hence, perverted. <geometry> Twisted curve, a surface described by a straight line moving according to any law whatever, yet so that the consecutive positions of the line shall not be in one plane; a warped surface. Source: Websters Dictionary (01 Mar 1998) |
| twisted hairs | pili torti |
| twisting | From Twist. Twisting pair. <physics> See Pair. Source: Websters Dictionary (01 Mar 1998) |
| twitch | 1. The act of twitching; a pull with a jerk; a short, sudden, quick pull; as, a twitch by the sleeve. 2. A short, spastic contraction of the fibres or muscles; a simple muscular contraction; as, convulsive twitches; a twitch in the side. 3. <veterinary> A stick with a hole in one end through which passes a loop, which can be drawn tightly over the upper lip or an ear of a horse. By twisting the stick the compression is made sufficiently painful to keep the animal quiet during a slight surgical operation. Source: Websters Dictionary (01 Mar 1998) |
| twitch grass | <botany> See Quitch grass. Source: Websters Dictionary (01 Mar 1998) |
| twitch muscle | <physiology> Striated muscle innervated by a single motoneuron and having an electrically excitable membrane that exhibits an all or none response (c.f. Tonic muscle): in mammals almost all skeletal muscles are twitch muscles. Physiologists often divide muscles into fast and slow twitch types, the fast twitch muscles being associated with fast motor units. (18 Nov 1997) |
| twite | <zoology> The European tree sparrow. The mountain linnet (Linota flavirostris). Source: Websters Dictionary (01 Mar 1998) |
| twitlark | <zoology> The meadow pipit. Source: Websters Dictionary (01 Mar 1998) |
| twittering | 1. The act of one who, or that which, twitters. 2. A slight nervous excitement or agitation, such as is caused by desire, expectation, or suspense. "A widow, who had a twittering towards a second husband, took a gossiping companion to manage the job." (L'Estrange) Source: Websters Dictionary (01 Mar 1998) |
| twixt-brain | <anatomy> The thalamencephalon. Source: Websters Dictionary (01 Mar 1998) |
| two | One and one; twice one. "Two great lights." . "Two black clouds." Two is often joined with other words, forming compounds signifying divided into, consisting of, or having, two parts, divisions, organs, or the like; as two-bladed, two-celled, two-eared, two-flowered, twohand, two-headed, two-horse, two-leafed or two-leaved, two-legged, two-lobed, two-masted, two-named, two-part, two-petaled, two-pronged, two-seeded, two-sided, two-story, two-stringed, two-foothed, two-valved, two-winged, and the like. One or two, a phrase often used indefinitely for a small number. Source: Websters Dictionary (01 Mar 1998) |
| two dimensional gel electrophoresis | <technique> A high resolution separation technique in which protein samples are separated by isoelectric focussing in one dimension and then laid on an SDS gel for size determined separation in the second dimension. Can resolve hundreds of components on a single gel. (18 Nov 1997) |
| two-bellied muscle | <anatomy> One of the suprahyoid group of muscles consisting of two bellies united by a central tendon which is connected to the body of the hyoid bone; origin, by posterior belly from the digastric groove medial to the mastoid process; insertion, by anterior belly into lower border of mandible near midline; action, elevates the hyoid when mandible is fixed; depresses the mandible when hyoid is fixed; nerve supply, posterior belly from facial, anterior belly by nerve to the mylohyoid from the mandibular division of trigeminal, a muscle with two fleshy bellies separated by a fibrous insertion. Synonym: musculus digastricus, biventer mandibulae, musculus biventer mandibulae, two-bellied muscle. (05 Mar 2000) |
| two-capsuled | <botany> Having two distinct capsules; bicapsular. Source: Websters Dictionary (01 Mar 1998) |