| dolorogenic zone | A specific point or area where, if stimulated by touch, pain, or pressure, a painful response will be induced. Synonym: dolorogenic zone, trigger area, trigger zone. (05 Mar 2000) |
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| dolorology | The study and treatment of pain. Origin: L. Dolor, pain, + G. Logos, study (05 Mar 2000) |
| dolphin | 1. <zoology> A cetacean of the genus Delphinus and allied genera (especially. D. Delphis); the true dolphin. The Coryphaena hippuris, a fish of about five feet in length, celebrated for its surprising changes of colour when dying. It is the fish commonly known as the dolphin. See Coryphaenoid. The dolphin of the ancients (D. Delphis) is common in the Mediterranean and Atlantic, and attains a length of from six to eight feet. 2. [Gr. A mass of iron or lead hung from the yardarm, in readiness to be dropped on the deck of an enemy's vessel. 3. A kind of wreath or strap of plaited cordage. A spar or buoy held by an anchor and furnished with a ring to which ships may fasten their cables. A mooring post on a wharf or beach. A permanent fender around a heavy boat just below the gunwale. 4. In old ordnance, one of the handles above the trunnions by which the gun was lifted. 5. <astronomy> A small constellation between Aquila and Pegasus. See Delphinus. 2. <zoology> Dolphin fly, a short vertical spar under the bowsprit. Origin: F. Dauphin dolphin, dauphin, earlier spelt also doffin; cf. OF. Dalphinal of the dauphin; fr. L. Delphinus, Gr. A dolphin (in senses 1, 2, & 5), perh. Properly, belly fish; cf. Womb, Skr. Garbha; perh. Akin to E. Calf. Cf. Dauphin, Delphine. Source: Websters Dictionary (01 Mar 1998) |
| dolphinet | A female dolphin. Source: Websters Dictionary (01 Mar 1998) |
| dolphins | Mammals of the families delphinidae (ocean dolphins), iniidae, lipotidae, pontoporiidae, and platanistidae (all river dolphins). The common name dolphin is applied to small cetaceans having a beaklike snout and a slender, streamlined body, whereas porpoises are small cetaceans with a blunt snout and rather stocky body. Dolphins are the most agile of the cetaceans and some of the speediest. They have remarkable group precision and regularity of movement. (12 Dec 1998) |
| dom | <chemical> 2,5-dimethoxy-alpha,4-dimethylbenzeneethanamine. A psychedelic phenylisopropylamine derivative whose mood-altering effects and mechanism of action may be similar to those of lsd. Pharmacological action: hallucinogens, serotonin agonists. Chemical name: Benzeneethanamine, 2,5-dimethoxy-alpha,4-dimethyl- (12 Dec 1998) |
| domable | Capable of being tamed; tamable. Origin: L. Domabilis, fr. Domare to tame. Source: Websters Dictionary (01 Mar 1998) |
| domableness | Tamableness. Source: Websters Dictionary (01 Mar 1998) |
| domage | 1. Damage; hurt. 2. Subjugation. See: Damage. Source: Websters Dictionary (01 Mar 1998) |
| domain | <molecular biology> Used to describe a part of a molecule or structure that shares common physico chemical features, for example hydrophobic, polar, globular, helical domains or properties for example DNA binding domain, ATP binding domain. (18 Nov 1997) |
| domains | 1. Homologous units of approximately 110 to 120 amino acids each which comprise the light and heavy chains of the immunoglobulin molecule and which serve specific functions. The light chain has two domains's, one in the variable region and one in the constant region of the chain; the heavy chain has four to five domains's, depending upon the class of immunoglobulin, one in the variable region and the remaining ones in the constant region. 2. A region of a protein having some distinctive physical feature or role. Origin: Fr. Domaine, fr. L. Dominium, property, dominion (05 Mar 2000) |
| domal | <astronomy> Pertaining to a house. Origin: L. Domus house. Source: Websters Dictionary (01 Mar 1998) |
| domanial | Of or relating to a domain or to domains. Source: Websters Dictionary (01 Mar 1998) |
| domatia | <botany> Small structures on the lower surface of a leaf in some woody dicotyledons, usually consisting of depressions, partly enclosed by leaf tissue or hairs, located in the axils of the primary veins. Sing. Domatium. (09 Oct 1997) |
| Dombrock blood group | See Blood Groups appendix. (05 Mar 2000) |