| grains | Parakeratotic nuclei within the horny layer of the epidermis, found in keratosis follicularis. (05 Mar 2000) |
|---|---|
| grakle | <zoology> See Grackle. Source: Websters Dictionary (01 Mar 1998) |
| grallae | <ornithology> An order of birds which formerly included all the waders. By later writers it is usually restricted to the sandpipers, plovers, and allied forms. Synonym: Grallatores. Origin: NL, fr. L. Grallae stilts, for gradulae, fr. Gradus. See Grade. Source: Websters Dictionary (01 Mar 1998) |
| grallatores | <zoology> See Grallae. Origin: NL. From L. Grallator one who runs on stilts. Source: Websters Dictionary (01 Mar 1998) |
| grallatory | <zoology> Of or pertaining to the Grallatores, or waders. Source: Websters Dictionary (01 Mar 1998) |
| grallic | <zoology> Pertaining to the Grallae. Source: Websters Dictionary (01 Mar 1998) |
| gralline | <zoology> Of or pertaining to the Grallae. Source: Websters Dictionary (01 Mar 1998) |
| gram | A gram is the unit of measurement used to measure mass in the metric system. It is equal to the mass of one millilitre (one thousandth of a litre) of water at the temperature where water has the highest density (4 degrees C). (09 Oct 1997) |
| gram calorie | The quantity of energy required to raise the temperature of 1 g of water 1캜, or from 14.5캜 to 15.5캜 in the case of normal or standard calorie. Synonym: gram calorie. (05 Mar 2000) |
| gram equivalent | The weight in grams of an element that combines with or replaces 1 gram of hydrogen, the atomic or molecular weight in grams of an atom or group of atoms involved in a chemical reaction divided by the number of electrons donated, taken up, or shared by the atom or group of atoms in the course of that reaction, the weight of a substance contained in 1 liter of 1 normal solution; a variant of. Synonym: combining weight, equivalent weight. (05 Mar 2000) |
| Gram stain | <microbiology, procedure> A method of staining bacteria using a violet stain. The gram staining characteristics (denoted as positive or negative) can assist in the identification of the offending bacteria. A heat fixed bacterial smear is stained with crystal violet (methyl violet), treated with 3% iodine/potassium iodide solution, washed with alcohol and counterstained. The method differentiates bacteria into two main classes, gram-positive and gram-negative. Certain bacteria, notably mycobacteria, that have walls with high lipid content show acid-fast staining the stain resists decolouration in strong acid. (27 Sep 1997) |
| Gram's iodine | <microbiology> A solution containing iodine and potassium iodide, used in Gram's stain. (05 Mar 2000) |
| Gram's stain | <microbiology, technique> A method for differential staining of bacteria; smears are fixed by flaming, stained in a solution of crystal violet, treated with iodine solution, rinsed, decolorised, and then counterstained with safranin O. Gram-positive organisms stain purple black and Gram-negative organisms stain pink; useful in bacterial taxonomy and identification, and also in indicating fundamental differences in cell wall structure. (05 Mar 2000) |
| Gram, Hans | <person> Danish bacteriologist, 1853-1938. See: Gram's iodine, Gram's stain, Weigert-Gram stain. (05 Mar 2000) |
| gram-atomic weight | Atomic weight expressed in grams. Compare: mole. (05 Mar 2000) |