| binocular fixation | A condition in which both eyes are simultaneously directed to the same target. Synonym: bifoveal fixation. (05 Mar 2000) |
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| binocular heterochromia | An increase or decrease in pigmentation of one eye, with or without extraocular pigmentary defects. (05 Mar 2000) |
| binocular microscope | <instrument, microscopy> A microscope fitted with double eyepieces for vision with both eyes. The purpose in dividing the same image from a single objective of the usual compound micro-scope is to reduce eyestrain and muscular fatigue which may result from monocular, high-power microscopy. The purpose in obtaining a different image for each of two oculars is to provide stereoscopy by means of two different angles of view. There are two kinds of stereoscopic microscopes: binobjective (Greenough) older type and monobjective (common main objective) newer type. (See stereo microscope, Greenough microscope, etc.) (05 Aug 1998) |
| binocular ophthalmoscope | <instrument> An ophthalmoscope that provides a stereoscopic view of the fundus. (05 Mar 2000) |
| binocular parallax | The difference in the angles formed by the lines of sight to two objects situated at different distances from the eyes; a factor in the visual perception of depth. Synonym: stereoscopic parallax. (05 Mar 2000) |
| binocular rivalry | Alteration in perception of portions of the visual field when the two eyes are simultaneously and rapidly exposed to targets containing dissimilar colours or borders. (05 Mar 2000) |
| binocular vision | Vision with a single image, by both eyes simultaneously. (05 Mar 2000) |
| binomen | <zoology> The combination of two names, the first being a generic name and the second a specific name, that together constitute the scientific name of a species. (09 Jan 1998) |
| binomial | <mathematics> An expression consisting of two terms connected by the sign plus (+) or minus; as, a+b, or 7-3. Origin: L. Bis twice + nomen name: cf. F. Binome, LL. Binomius (or fr. Bi- + Gr. Distribution ?). Cf. Monomial. 1. Consisting of two terms; pertaining to binomials; as, a binomial root. 2. Having two names; used of the system by which every animal and plant receives two names, the one indicating the genus, the other the species, to which it belongs. <mathematics> Binomial theorem, the theorem which expresses the law of formation of any power of a binomial. Source: Websters Dictionary (01 Mar 1998) |
| binomial distribution | The probability distribution associated with two mutually exclusive outcomes; used to model cumulative incidence rates and prevalence rates. The bernoulli distribution is a special case of binomial distribution. (12 Dec 1998) |
| binomial nomenclature | <biology, ecology> The system of having two names (genus and specific epithet, also called Latin binomial) for each organism. (09 Oct 1997) |
| binotic | Synonym: binaural. Origin: L. Bini, a pair, + G. Ous (ot-), ear (05 Mar 2000) |
| binoxalate | <chemistry> A salt having two equivalents of oxalic acid to one of the base; an acid oxalate. Origin: Pref. Bin- + oxalate. Source: Websters Dictionary (01 Mar 1998) |
| binoxide | <chemistry> Same as Dioxide. Origin: Pref. Bin- + oxide. Source: Websters Dictionary (01 Mar 1998) |
| binswanger disease | <radiology> Subcortical atherosclerotic encephalopathy, atherosclerosis of penetrating vessels, older patients (>60) with hypertension, periventricular and deep white matter lesions, associated with BG infarcts, atrophy, difficult to correlate CT with functional impairment see also: demyelinating disease, white-matter disease (12 Dec 1998) |