| glasseye | 1. <zoology> A fish of the great lakes; the wall-eyed pike. 2. <veterinary> A species of blindness in horses in which the eye is bright and the pupil dilated; a sort of amaurosis. Source: Websters Dictionary (01 Mar 1998) |
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| glassologist | One who defines and explains terms; one who is versed in glossology. Source: Websters Dictionary (01 Mar 1998) |
| glasstonbury thorn | <botany> A variety of the common hawthorn. Source: Websters Dictionary (01 Mar 1998) |
| glassworker's cataract | A cataract secondary to absorption of heat by the lens, or by transmission from the adjacent iris. Synonym: furnacemen's cataract, glassworker's cataract. (05 Mar 2000) |
| glasswort | <botany> A seashore plant of the Spinach family (Salicornia herbacea), with succulent jointed stems; also, a prickly plant of the same family (Salsola Kali), both formerly burned for the sake of the ashes, which yield soda for making glass and soap. Source: Websters Dictionary (01 Mar 1998) |
| glassy | 1. Made of glass; vitreous; as, a glassy substance. 2. Resembling glass in its properties, as in smoothness, brittleness, or transparency; as, a glassy stream; a glassy surface; the glassy deep. 3. Dull; wanting life or fire; lackluster; said of the eyes. "In his glassy eye. <chemical>" Glassy feldspar, a variety of orthoclase; sanidine. Source: Websters Dictionary (01 Mar 1998) |
| glassy membrane | The basement membrane present between the stratum granulosum and the theca interna of a vesicular ovarian follicle; it becomes very prominent in large atretic follicles, the basement membrane and associated connective tissue of the hair follicle. Synonym: hyaline membrane. (05 Mar 2000) |
| flint glass | <chemistry> A soft, heavy, brilliant glass, consisting essentially of a silicate of lead and potassium. It is used for tableware, and for optical instruments, as prisms, its density giving a high degree of dispersive power; so called, because formerly the silica was obtained from pulverized flints. Synonym: crystal glass. Cf. Glass. The concave or diverging half on an achromatic lens is usually made of flint glass. Source: Websters Dictionary (01 Mar 1998) |
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| lady's looking-glass | <botany> See Venus's looking-glass, under Venus. Source: Websters Dictionary (01 Mar 1998) |
| focusing glass | <microscopy> A hand magnifier, used at the focal plane of a camera, usually with the ground glass removed. Its purpose is to examine the image for critical focus. It is, as a rule, a low-power magnifier so mounted that it is in focus when supported on a piece of clear glass at the focal plane of the cam- era, for studying the image. It operates equally well on the aerial image. (05 Aug 1998) |