| Kock, Nils | <person> 20th century Swedish surgeon. See: Kock pouch. (05 Mar 2000) |
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| Koehler illumination | <microscopy> Mode of microscope illumination in which the light source is imaged onto the condenser iris diaphragm and the field diaphragm (in front of the lamp collector lens) is imaged by the condenser onto the plane of focus of the specimen. With Koehler illumination, the aperture and field can be regulated independently to provide maximum resolution and optimum contrast. Also, a field with uniform illumination is obtained, circumscribed by the image of the field diaphragm. (05 Aug 1998) |
| koel | <ornithology> Any one of several species of cuckoos of the genus Eudynamys, found in India, the East Indies, and Australia. They deposit their eggs in the nests of other birds. Origin: Native name in India. Source: Websters Dictionary (01 Mar 1998) |
| Koenen's tumour | Multiple smooth firm nodules formed at the nail folds, often over 10 mm in length, which appear at or after puberty in some patients with tuberous sclerosis. Synonym: Koenen's tumour. (05 Mar 2000) |
| Koenig's syndrome | <syndrome> Alternating attacks of constipation and diarrhoea, with colic, meteorism, and gurgling in the right iliac fossa, said to be symptomatic of caecal tuberculosis. (05 Mar 2000) |
| Koenig, Franz | <person> German surgeon, 1832-1910. See: Koenig's syndrome. (05 Mar 2000) |
| Koerber-Salus-Elschnig syndrome | Irregular, jerky nystagmus combining convergence and retraction of the eye into the orbit, especially on attempting an upward gaze. Synonym: Koerber-Salus-Elschnig syndrome. (05 Mar 2000) |
| Koerte, Werner | <person> German surgeon, 1853-1937. See: Koerte-Ballance operation. (05 Mar 2000) |
| Koerte-Ballance operation | Operative anastomosis of the facial and hypoglossal nerves for the treatment of facial paralysis. (05 Mar 2000) |
| Koettstorfer number | The number of milligrams of KOH required to saponify 1 g of fat; an approximate measure of the average molecular weight of a fat, with which it varies inversely. Synonym: Koettstorfer number. (05 Mar 2000) |
| Koettstorfer, J | <person> 19th century German chemist. See: Koettstorfer number. (05 Mar 2000) |
| Kogoj, Franz | <person> Yugoslavian physician, *1894. See: spongiform pustule of Kogoj. (05 Mar 2000) |
| kohl-rabi | Origin: G. Cf. Cole, Rape the plant. <botany> A variety of cabbage, in which the edible part is a large, turnip-shaped swelling of the stem, above the surface of the ground. Source: Websters Dictionary (01 Mar 1998) |
| kohler disease | <radiology> Osteochondrosis of tarsal navicular (12 Dec 1998) |
| Kohler illumination | <technique> The recommended type of optical microscope illumination in which the image of the lamp filament is focussed in the lower focal plane of the substage condenser. As opposed to collimated illumination in which the light emitting surface is imaged in the object. Collimated illumination requires even intensity across the light emitting surface but is preferable for certain types of microscopy. Kohler illumination gives even illumination on the object even if there are irregularities in the brightness of the light emitting surface. (18 Nov 1997) |