| gallinae | <ornithology> An order of birds, including the common domestic fowls, pheasants, grouse, quails, and allied forms; sometimes called Rasores. Origin: L. Gallina a hen, gallus a cock. (11 Mar 1998) |
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| gallinule | <ornithology> One of several wading birds, having long, webless toes, and a frontal shield, belonging to the family Rallidae. They are remarkable for running rapidly over marshes and on floating plants. The purple gallinule of America is Ionornis Martinica, that of the Old World is Porphyrio porphyrio. The common European gallinule (Gallinula chloropus) is also called moor hen, water hen, water rail, moor coot, night bird, and erroneously dabchick. Closely related to it is the Florida gallinule (Gallinula galeata). The purple gallinule of Southern Europe and Asia was formerly believed to be able to detect and report adultery, and for that reason, chiefly, it was commonly domesticated by the ancients. Origin: L. Gallinula chicken, dim. Of gallina hen: cf. F. Gallinule. Source: Websters Dictionary (01 Mar 1998) |
| gallipot | A glazed earthen pot or vessel, used by druggists and apothecaries for containing medicines, etc. Origin: Prob. Fr. OD. Gleypot, the first part of which is possibly akin to E. Glad. See Glad, and Pot. Source: Websters Dictionary (01 Mar 1998) |
| gallium | <chemistry, element> A rare metallic element, found in certain zinc ores. It is white, hard, and malleable, resembling aluminium, and remarcable for its low melting point (86 F, 30C). The element was predicted with most of its properties, under the name ekaluminium, by the Russian chemist Mendelejeff, on the basis of the Periodic law. This prediction was verified in its discovery by the French chemist Lecoq de Boisbaudran by its characteristic spectrum (two violet lines), in an examination of a zinc blende from the Pyrenees. Atomic weight: 69.9 Abbreviation: Ga Origin: NL, fr. L. Gallia France. Source: Websters Dictionary (01 Mar 1998) |
| gallium isotopes | Stable gallium atoms that have the same atomic number as the element gallium, but differ in atomic weight. Ga-71 is a stable gallium isotope. (12 Dec 1998) |
| gallium radioisotopes | Unstable isotopes of gallium that decay or disintegrate emitting radiation. Ga atoms with atomic weights 63-68, 70 and 72-76 are radioactive gallium isotopes. (12 Dec 1998) |
| gallium uptake with normal chest film | <radiology> Pulmonary drug toxicity, tumour infiltration, sarcoidosis, pneumocystis carinii see: lung: gallium imaging (12 Dec 1998) |
| gallium vs. indium | <radiology> Advantages: Ga-67 citrate, readily available, no preparation, bone and soft-tissue infections, chronic inflammatory processes, In-111 WBCs, no bowel uptake, minimal or no uptake in healing wounds, images easier to interpret, high specificity for inflammatory process (12 Dec 1998) |
| gallium-67 | A cyclotron-produced radionuclide with a half-life of 3.260 days and major gamma ray emissions of 93, 185, and 300 kiloelectron volts; used in the citrate form as a tumour-and inflammation-localizing radiotracer. (05 Mar 2000) |
| gallium-67 citrate | <radiology> Analogue of ferric iron, decay: by electron capture to ground state of Zn-67, energy levels: 92 KeV (40%); 184 KeV (23%); 296 KeV (21%), physiological half life: 3.3 days (78 hr), biological half life: 2-3 weeks, binding sites: serum: transferrin, haptoglobin, albumin, globulins, tissue: lactoferrin, PMN's (viable and nonviable), lymphocytes, macrophages, bacteria and fungi, tumour cell-associated transferrin receptor see: gallium: indications (12 Dec 1998) |
| gallium-68 | A positron emitter with a radioactive half-life of 1.130 hours. (05 Mar 2000) |
| gallium: indications | <radiology> Indications: inflammation, bone, tumour, lung, renal, lymphoma, malignant melanoma NO UPTAKE: most benign neoplasms, haemangioma, cirrhosis, cystic disease of breast, liver, thyroid, reactive lymphadenopathy, inactive granulomatous disease see: gallium-67 citrate (12 Dec 1998) |
| galliwasp | <zoology> A West Indian lizard (Celestus occiduus), about a foot long, imagined by the natives to be venomous. Origin: Etymol. Uncertain. Source: Websters Dictionary (01 Mar 1998) |
| gallnut | <zoology> A round gall produced on the leaves and shoots of various species of the oak tree. See Gall, and Nutgall. Source: Websters Dictionary (01 Mar 1998) |
| gallocyanin | A blue phenoxazin dye, C15H13N2O5Cl, used as a stain for nucleic acids after boiling with chrome alum, and is applicable for quantitative cytophotometric determination of these moieties. (05 Mar 2000) |