| Geraghty | John T., U.S. Physician, 1876-1924. See: Geraghty's test, Rowntree and Geraghty test. (05 Mar 2000) |
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| Geraghty's test | An obsolete test for renal function; after the patient has drunk a glass or two of water, 1 ml of a 0.6% solution of dye is injected hypodermically; the time between this injection and the appearance of a pink tinge in the urine as it falls into an alkaline solution is noted; the amount excreted in each of the next 2 hours is then estimated colourimetrically. Synonym: Geraghty's test, phthalein test, red test, Rowntree and Geraghty test. (05 Mar 2000) |
| gerah | A small coin and weight; 1-20th of a shekel. The silver gerah is supposed to have been worth about three cents; the gold about fifty-four cents; the weight equivalent to about thirteen grains. Origin: Heb. Grah, lit, a bean. Source: Websters Dictionary (01 Mar 1998) |
| geraniaceous | <botany> Of or pertaining to a natural order of pants (Geraniaceae) which includes the genera Geranium, Pelargonium, and many others. Source: Websters Dictionary (01 Mar 1998) |
| geranine | 1. <medicine> A valuable astringet obtained from the root of the Geranium maculatum or crane's-bill. 2. <chemistry> A liquid terpene, obtained from the crane's-bill (Geranium maculatum), and having a peculiar mulberry odour. Alternative forms: geranium. See: Geranium. Source: Websters Dictionary (01 Mar 1998) |
| geraniol | An olefinic terpene alcohol that is the principal constituent of oil of rose and oil of palmarosa; also found in many other volatile oils, such as citronella and lemon grass. An isomer of linalool; an oily liquid with sweet rose odour used in perfumery. Also used as an insect attractant. (05 Mar 2000) |
| geraniol 10-hydroxylase | <enzyme> Catalyses the conversion of geraniol to 10-hydroxygeraniol; a cytochrome p-450 enzyme Registry number: EC 1.14.- (26 Jun 1999) |
| geranium | 1. <botany> A genus of plants having a beaklike tours or receptacle, around which the seed capsules are arranged, and membranous projections, or stipules, at the joints. most of the species have showy flowers and a pungent odour. Called sometimes crane's-bill. 2. <botany> A cultivated pelargonium. Many plants referred to the genus Geranium by the earlier botanists are now separated from it under the name of Pelargonium, which includes all the commonly cultivated "geraniums", mostly natives of South Africa. Origin: L, fr. Gr, from crane: cf. F. Geranium. See Crane. Source: Websters Dictionary (01 Mar 1998) |
| geranoylation | The geranoyl group is a linear sequence of 2 isoprene residues. The term geranoyl geranoyl is used for the common unit of 4 residues. See: polyisoprenylation. (18 Nov 1997) |
| geranyl pyrophosphate | A key intermediate in the biosynthesis of sterols, dolichols, ubiquinone, and prenylated proteins. (05 Mar 2000) |
| geranyl pyrophosphate-sabinene hydrate cyclase | <enzyme> Enzyme from sweet marjoram; catalyses cation-dependent cyclization of geranyl pyrophosphate to cis and trans sabinene hydrate, deriving oh from water, not from the pyrophosphate ester Registry number: EC 5.5.- Synonym: sabinene hydrate cyclase, sabinene hydrate synthase (26 Jun 1999) |
| geranylgeraniol kinase | <enzyme> A membrane-bound enzyme that catalyses the monophosphorylation of geranylgeraniol; isolated from sulfolobus acidocaldarius Registry number: EC 2.7.1.- Synonym: ggoh kinase (26 Jun 1999) |
| geranylgeranyl phosphate kinase | <enzyme> Cytosolic enzyme that catalyses phosphorylation of geranylgeraniol phosphate to yield geranylgeranyl diphosphate; isolated from sulfolobus acidocaldarius Registry number: EC 2.7.4.- Synonym: ggp kinase (26 Jun 1999) |
| geranylgeranyl pyrophosphate | A key intermediate in the biosynthesis of many terpenes. (05 Mar 2000) |
| geratology | The scientific study of the process and problems of aging. Synonym: geratology. Origin: Geronto-+ G. Logos, study (05 Mar 2000) |