| Ramsay Hunt | See: Hunt. (05 Mar 2000) |
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| Ramsay Hunt's syndrome | <syndrome> An intention tremor beginning in one extremity, gradually increasing in intensity, and subsequently involving other parts of the body. Synonym: progressive cerebellar tremor. Facial paralysis, otalgia, and herpes zoster resulting from viral infection of the seventh cranial nerve and geniculate ganglion, a form of juvenile paralysis agitans associated with primary atrophy of the pallidal system. Synonym: paleostriatal syndrome, pallidal syndrome. Synonym: Ramsay Hunt's syndrome. (05 Mar 2000) |
| Ramsden circle | <microscopy> The circular spot of light formed at that distance above the eyepiece where the chief image forming rays cross, the back focal plane of the eyepiece. The objective back focal plane is in conjugate focus in this same plane. In visual microscopy, the point where the pupil of the eye is placed. (05 Aug 1998) |
| Ramsden disk | <microscopy> The small circular patch of light that appears at the eyepoint above the ocular lens. This is the exit pupil of an optical instrument that, in a microscope adjusted for Koehler illumination, lies in a plane conjugate with the objective rear focal plane, condenser iris, and light source. Alteration of the Ramsden disk (for example, by the observer's iris) modifies the aperture function, diffraction pattern, and direction of view of the specimen. (05 Aug 1998) |
| Ramsden eyepiece | <microscopy> An ocular consisting of two plano-convex lenses with the plane side of the lower lens nearer the objective. The focal plane is outside the system, hence it is of the positive type with the diaphragm below the lenses. While this eyepiece gives a somewhat flatter field than the Huygenian and for this reason has been used in the past for micrometre oculars, the colour correction is poor with the formation of colour fringes around the object. The modern Ramsden eyepiece has an achromatic doublet for the eye lens to correct for colour. (05 Aug 1998) |
| Ramsden's ocular | An eyepiece of a microscope, consisting of two planoconvex lenses with convexities turned to each other. (05 Mar 2000) |
| Ramsden, Jesse | <person> English optician, 1735-1800. See: Ramsden's ocular. (05 Mar 2000) |
| ramson | <botany> A broad-leaved species of garlic (Allium ursinum), common in European gardens. Synonym: buckram. Origin: AS. Hramsan, pl, akin to G. Rams, Sw. Rams, ramslok; cf. Gr. Onion. Source: Websters Dictionary (01 Mar 1998) |
| ramsted | <botany> A yellow-flowered weed; so named from a Mr. Ramsted who introduced it into Pennsylvania. See Toad flax. Synonym: Ramsted weed. Source: Websters Dictionary (01 Mar 1998) |
| Ramstedt operation | Longitudinal incision through the anterior wall of the pyloric canal to the level of the submucosa, to treat hypertrophic pyloric stenosis. Synonym: Fredet-Ramstedt operation, Ramstedt operation. Origin: pyloro-+ G. Mys, muscle, + tome, incision (05 Mar 2000) |
| Ramstedt, Conrad | <person> German surgeon, 1867-1963. See: Ramstedt operation, Fredet-Ramstedt operation. (05 Mar 2000) |
| Ramsay Hunt syndrome |
syndrome resulting from infection by the herpes varicella zoster virus; characterized by vertigo and pain in the ears and facial nerve paralysis and sometimes hearing loss
Ãâó: wordnet.princeton.edu/perl/webwn
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| Ramstedt operation |
(Ram
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| Ramsay Hunt paralysis |
(Ram
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| Ramsden's eyepiece |
(Rams
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| Ramsay Hunt p. |
juvenile p. agitans (of Hunt).
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| rams | syndrome resulting from infection by the herpes varicella zoster virus |
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| rams | any of 12 kings of ancient Egypt between 1315 and 1090 BC |
| rams | king of Egypt between 1304 and 1237 BC who built many monuments |
| rams | king of Egypt between 1304 and 1237 BC who built many monuments |
| rams | in deplorable condition |
| rams | pungent Old World weedy plant |
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