| gad | 1. The point of a spear, or an arrowhead. 2. A pointed or wedge-shaped instrument of metal, as a steel wedge used in mining, etc. "I will go get a leaf of brass, And with a gad of steel will write these words." (Shak) 3. A sharp-pointed rod; a goad. 4. A spike on a gauntlet; a gadling. 5. A wedge-shaped billet of iron or steel. "Flemish steel . . . Some in bars and some in gads." (Moxon) 6. A rod or stick, as a fishing rod, a measuring rod, or a rod used to drive cattle with. Upon the gad, upon the spur of the moment; hastily. "All this done upon the gad!" Origin: OE. Gad, Icel. Gaddr goad, sting; akin to Sw. Gadd sting, Goth. Gazds, G. Gerte switch. See Yard a measure. Source: Websters Dictionary (01 Mar 1998) |
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| gadbee | <zoology> The gadfly. Source: Websters Dictionary (01 Mar 1998) |
| gadder | One who roves about idly, a rambling gossip. Source: Websters Dictionary (01 Mar 1998) |
| Gaddum and Schild test | A sensitive method for identification of epinephrine in tissue or other material, based on the fluorescence of epinephrine exposed to ultraviolet light in the presence of alkali and oxygen; sensitivity ranges from 1:50 to 1:100 million. (05 Mar 2000) |
| Gaddum, John | <person> English biochemist, *1900. See: Gaddum and Schild test. (05 Mar 2000) |
| gade | <zoology> A small British fish (Motella argenteola) of the Cod family. A pike, so called at Moray Firth; called also gead. Origin: Cf. Cod the fish. Source: Websters Dictionary (01 Mar 1998) |
| gadfly | <entomology> Any dipterous insect of the genus Oestrus, and allied genera of botflies. The sheep gadfly (Oestrus ovis) deposits its young in the nostrils of sheep, and the larvae develop in the frontal sinuses. The common species which infests cattle (Hypoderma bovis) deposits its eggs upon or in the skin where the larvae or bots live and produce sores called wormels. The gadflies of the horse produce the intestinal parasites called bots. See Botfly, and Bots. The true horseflies are often erroneously called gadflies, and the true gadflies are sometimes incorrectly called breeze flies. <zoology> Gadfly petrel, one of several small petrels of the genus Oestrelata. (30 Mar 1998) |
| gadhelic | Of or pertaining to that division of the Celtic languages, which includes the Irish, Gaelic, and Manx. See: Gaelic. Source: Websters Dictionary (01 Mar 1998) |
| gadic | <chemistry> Pertaining to, or derived from, the cod (Gadus); applied to an acid obtained from cod-liver oil, viz, gadic acid. Source: Websters Dictionary (01 Mar 1998) |
| gadling | <medicine> See Gad. Origin: Gad, n. + -ling. Source: Websters Dictionary (01 Mar 1998) |
| gadodiamide | GdDTPA-BMA, diethylenetriaminepentaacetatobis(methylamide)gadolinium (III);a nonionic structural analog of gadolinium DPTA; used as a paramagnetic contrast medium in magnetic resonance imaging. (05 Mar 2000) |
| gadoid | <zoology> Of or pertaining to the family of fishes (Gadidae) which includes the cod, haddock, and hake. One of the Gadidae. Alternative forms: gadid. Origin: NL. Gadus cod: cf. F. Gadoide gadoid, Gr. A sort of fish, F. Gade. Source: Websters Dictionary (01 Mar 1998) |
| gadoleic acid | An unsaturated fatty acid from cod liver oil and other sources. Synonym: 9-eicosenoic acid. (05 Mar 2000) |
| gadolinia | <chemistry> A rare earth, regarded by some as an oxide of the supposed element gadolinium, by others as only a mixture of the oxides of yttrium, erbium, ytterbium, etc. Origin: NL. See Gadolinite. Source: Websters Dictionary (01 Mar 1998) |
| gadolinic | <chemistry> Pertaining to or containing gadolinium. Source: Websters Dictionary (01 Mar 1998) |