| zechstein | <geology> The upper division of the Permian (Dyas) of Europe. The prevailing rock is a magnesian limestone. Origin: Gr, fr. Zeche a mine + stein a stone. Source: Websters Dictionary (01 Mar 1998) |
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| zedoary | <medicine> A medicinal substance obtained in the East Indies, having a fragrant smell, and a warm, bitter, aromatic taste. It is used in medicine as a stimulant. It is the rhizome of different species of Curcuma, especially. C. Zedoaria, and comes in short, firm pieces, externally of a wrinkled gray, ash-coloured appearance, but within of a brownish red colour. There are two kinds, round zedoary, and long zedoary. Origin: F. Zedoaire, LL. Zedoaria; cf. It. Zedoaria, zettovario, Pg. Zedoaria, Sp. Zedoaria, cedoaria; all fr. Ar. & Per. Zedwr. Source: Websters Dictionary (01 Mar 1998) |
| zeekoe | <zoology> A hippopotamus. Origin: D, sea cow, lake cow. Source: Websters Dictionary (01 Mar 1998) |
| Zeeman effect | The splitting of spectral lines into three or more symmetrically placed lines when the light source is subjected to a magnetic field. (05 Mar 2000) |
| Zeeman, Pieter | <person> Dutch physicist and Nobel laureate, 1865-1943. See: Zeeman effect. (05 Mar 2000) |
| ZEEP | <abbreviation> Zero end-expiratory pressure. (05 Mar 2000) |
| zein | <chemistry> A nitrogenous substance of the nature of gluten, obtained from the seeds of Indian corn (Zea) as a soft, yellowish, amorphous substance. [Formerly written zeine. Origin: Cf. F. Zeine. See Zea. Source: Websters Dictionary (01 Mar 1998) |
| Zeis' glands | Sebaceous gland's opening into the follicles of the eyelashes. (05 Mar 2000) |
| Zeis, Eduard | <person> Dresden ophthalmologist, 1807-1868. See: Zeis' glands, zeisian sty. (05 Mar 2000) |
| zeisian | Relating to or described by Eduard Zeis. (05 Mar 2000) |
| zeisian sty | Inflammation of one of Zeis' glands. (05 Mar 2000) |
| Zeitgeist | In psychology, the climate of opinion, conventions of thought, covert influences, and unquestioned assumptions that are implicit in a given culture, the arts, or science at any point in time, and in which the individual operates and thus is influenced. Origin: Ger. Zeit, time, + geist, spirit (05 Mar 2000) |
| zellweger syndrome | <syndrome> A rare, autosomal recessive congenital syndrome of multiple abnormalities. Some of the principal characteristics are cerebral dysfunction, defective myelinization, craniofacial abnormalities, renal cysts, hepatomegaly, and biliary dysgenesis. Absence of liver and kidney peroxisomes is the underlying basic defect. (12 Dec 1998) |
| Zellweger, Hans | <person> U.S. Paediatrician, *1909. See: Zellweger syndrome. (05 Mar 2000) |
| zelophobia | <psychology> Morbid fear of jealousy. Origin: G. Zelos, zeal, + phobos, fear (05 Mar 2000) |