| amaurotic mydriasis | A moderate widening of both pupils resulting from impaired visual input from one or both eyes. (05 Mar 2000) |
|---|---|
| amaurotic nystagmus | The pendular or, rarely, jerky nystagmus seen in severely reduced vision. Synonym: amaurotic nystagmus. (05 Mar 2000) |
| amaurotic pupil | Pupil in an eye that is blind because of ocular or optic nerve disease; this pupil will not contract to light except when the normal fellow eye is stimulated with light. (05 Mar 2000) |
| amaxophobia | <psychology> Rarely used term for morbid fear of, or of riding in, a vehicle. Synonym: hamaxophobia. Origin: G. Amaxa, hamaxa, a carriage, + phobos, fear (05 Mar 2000) |
| amazia | Absence of the breasts. Synonym: amazia. Origin: G. A-priv. + mastos, breast (05 Mar 2000) |
| amazon | 1. One of a fabulous race of female warriors in Scythia; hence, a female warrior. 2. A tall, strong, masculine woman; a virago. 3. <ornithology> A name numerous species of South American parrots of the genus Chrysotis. <zoology> Amazon ant, a species of ant (Polyergus rufescens), of Europe and America. They seize by conquest the larvae and nymphs other species and make slaves of them in their own nests. (11 Mar 1998) |
| amazon stone | <chemical> A variety of feldspar, having a verdigris-green colour. Origin: Named from the river Amazon. Source: Websters Dictionary (01 Mar 1998) |
| ambageusia | Loss of taste from both sides of the tongue. Origin: L. Ambo, both, + G. A-priv. + geusis, taste (05 Mar 2000) |
| ambal | <radiobiology> An ambipolar trap (tandem mirror) located at Novosibirsk in Russia. (Any additional information would be welcome.) (09 Oct 1997) |
| Ambard's constant | <physiology> Obsolete law's for output of urea: 1. With the urinary urea concentration constant, urea output varies directly as the square of the concentration of the blood urea. 2. With the blood urea concentration constant, urea output varies inversely as the square root of its urinary concentration. (05 Mar 2000) |
| Ambard's laws | <physiology> Obsolete law's for output of urea: 1. With the urinary urea concentration constant, urea output varies directly as the square of the concentration of the blood urea. 2. With the blood urea concentration constant, urea output varies inversely as the square root of its urinary concentration. (05 Mar 2000) |
| Ambard, Leon | <person> French pharmacologist, 1876-1962. See: Ambard's constant, Ambard's laws. (05 Mar 2000) |
| ambenonium chloride | <chemical> A quaternary ammonium compound that is an inhibitor of cholinesterase activity with actions similar to those of neostigmine, but of longer duration. Ambenonium is given by mouth in the treatment of myasthenia gravis. Pharmacological action: cholinesterase inhibitor, parasympathomimetic. Chemical name: Benzenemethanaminium, N,N'-((1,2-dioxo-1,2-ethanediyl)bis(imino-2,1-ethanediyl))bis(2-chloro-N,N-diethyl-, dichloride (12 Dec 1998) |
| amber | 1. <chemical> A yellowish translucent resin resembling copal, found as a fossil in alluvial soils, with beds of lignite, or on the seashore in many places. It takes a fine polish, and is used for pipe mouthpieces, beads, etc, and as a basis for a fine varnish. By friction, it becomes strongly electric. 2. Amber colour, or anything amber-coloured; a clear light yellow; as, the amber of the sky. 3. Ambergris. "You that smell of amber at my charge." (Beau. & Fl) 4. The balsam, liquidambar. Black amber, and old and popular name for jet. Origin: OE. Aumbre, F. Ambre, Sp. Ambar, and with the Ar. Article, alambar, fr. Ar. 'anbar ambergris. Source: Websters Dictionary (01 Mar 1998) |
| amber codon | <molecular biology> One of the three terminator codons. Its sequence is UAG. See: ochre codon, opal codon. (18 Nov 1997) |