| keraunograph | A figure or picture impressed by lightning upon the human body or elsewhere. Kerau-nogra-phy. Origin: Gr. Thunderbolt + graph. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| keraunophobia | <psychology> Morbid fear of thunder and lightning. Origin: G. Keraunos, thunderbolt, + phobos, fear (05 Mar 2000) |
| Kerckring's centre | An occasional independent ossification centre in the occipital bone; it appears in the posterior margin of the foramen magnum at about the sixteenth week of gestation. Synonym: Kerckring's ossicle. (05 Mar 2000) |
| Kerckring's folds | The numerous folds of the mucous membrane of the small intestine, running transversely for about two-thirds of the circumference of the gut. Synonym: circular folds, Kerckring's folds, Kerckring's valves, valvulae conniventes. (05 Mar 2000) |
| Kerckring's ossicle | An occasional independent ossification centre in the occipital bone; it appears in the posterior margin of the foramen magnum at about the sixteenth week of gestation. Synonym: Kerckring's ossicle. (05 Mar 2000) |
| Kerckring's valves | The numerous folds of the mucous membrane of the small intestine, running transversely for about two-thirds of the circumference of the gut. Synonym: circular folds, Kerckring's folds, Kerckring's valves, valvulae conniventes. (05 Mar 2000) |
| Kerckring, Theodor | <person> Dutch anatomist, 1640-1693. See: Kerckring's centre, Kerckring's folds, ossicle, Kerckring's valves. (05 Mar 2000) |
| kerion | A granulomatous secondarily infected lesion complicating fungal infection of the hair; typically, a raised boggy lesion. Origin: G. Kerion, honeycomb; a skin disease, fr. Keros, beeswax (05 Mar 2000) |
| kerite | A compound in which tar or asphaltum combined with animal or vegetable oils is vulcanised by sulphur, the product closely resembling rubber; used principally as an insulating material in telegraphy. Origin: Gr. Horn. Source: Websters Dictionary (01 Mar 1998) |
| Kerley A lines | Images of deep interlobular septa; longer, thicker, and more central than Kerley B lines; usually in upper lobes. (05 Mar 2000) |
| Kerley B lines | Fine peripheral septal lines. Synonym: costophrenic septal lines. (05 Mar 2000) |
| Kerley C lines | A non-specific fine reticular pattern on chest radiographs. (05 Mar 2000) |
| Kerley, Peter | <person> English radiologist, *1900. See: Kerley B lines. (05 Mar 2000) |
| kerma | <physics> The sum of the initial kinetic energies of all the charged ionising particle liberated by uncharged ionising particles per unit mass of a specified material. Kerma is measured in the same unit as absorbed dose. The SI unit of kerma is joule per kilogram and its special name is the gray (Gy). Kerma can be quoted for any specified material at a point in free space or in an absorbing medium. (13 Nov 1997) |
| kermes | 1. <zoology> The dried bodies of the females of a scale insect (Coccus ilicis), allied to the cochineal insect, and found on several species of oak near the Mediterranean. They are round, about the size of a pea, contain colouring matter analogous to carmine, and are used in dyeing. They were anciently thought to be of a vegetable nature, and were used in medicine. Alternative forms: chermes. 2. <botany> A small European evergreen oak (Quercus coccifera) on which the kermes insect (Coccus ilicis) feeds. Kermes mineral. <medicine> A compound of the trioxide and trisulphide of antimony, used in medicine. This substance occurs in nature as the mineral kermesite. Origin: Ar. & Per. Girmiz. See Crimson, and cf. Alkermes. Source: Websters Dictionary (01 Mar 1998) |