| xenogenesis | <biology> Same as Heterogenesis. The fancied production of an organism of one kind by an organism of another. Origin: Gr. Xenos a stranger + E. Genesis. Source: Websters Dictionary (01 Mar 1998) |
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| xenogenetic | <biology> Of or pertaining to xenogenesis; as, the xenogenetic origin of microzymes. Source: Websters Dictionary (01 Mar 1998) |
| xenogenic | 1. Originating outside of the organism, or from a foreign substance that has been introduced into the organism. Synonym: xenogenous. Synonym: xenogeneic. Origin: xeno-+ G. -gen, producing (05 Mar 2000) |
| xenogenous | Synonym: xenogenic. Synonym: xenogeneic. (05 Mar 2000) |
| xenograft | <surgery> A surgical graft of tissue from one species onto or into individuals of unlike species, genus or family. Also know as a heteroplastic graft. See: xenotransplantation. (11 May 1997) |
| xenomania | <psychiatry> A mania for, or an inordinate attachment to, foreign customs, institutions, manners, fashions, etc. Origin: Gr. Xenos strange + E. Mania. Source: Websters Dictionary (01 Mar 1998) |
| xenomi | <zoology> A suborder of soft-rayed fresh water fishes of which the blackfish of Alaska (Dallia pectoralis) is the type. Origin: NL, from Gr. Xenos strange. Source: Websters Dictionary (01 Mar 1998) |
| xenon | <chemical> A noble gas with the atomic symbol xe, atomic number 54, and atomic weight 131.30. It is found in the earth's atmosphere and has been used as an anaesthetic. Pharmacological action: anaesthetics, inhalation. Chemical name: Xenon (12 Dec 1998) |
| xenon 133 | <radiology> Xe-133, half-life: 5.2 days, 80 keV photon, dose for V/Q imaging = 20 mCi Cf: other lung ventilation agents (12 Dec 1998) |
| xenon isotopes | Stable xenon atoms that have the same atomic number as the element xenon, but differ in atomic weight. Xe-124, 126, 128-131, 134, and 136 are stable xenon isotopes. (12 Dec 1998) |
| xenon radioisotopes | Unstable isotopes of xenon that decay or disintegrate emitting radiation. Xe atoms with atomic weights 121-123, 125, 127, 133, 135, 137-145 are radioactive xenon isotopes. (12 Dec 1998) |
| xenon-133 | A radioisotope of xenon with a gamma emission at 81 keV and a physical half-life of 5.243 days; used in the study of pulmonary function and organ blood flow. (05 Mar 2000) |
| xenoparasite | An ecoparasite that becomes pathogenic in consequence of weakened resistance on the part of its host. (05 Mar 2000) |
| xenophobia | <psychology> Morbid fear of strangers. Origin: xeno-+ G. Phobos, fear (05 Mar 2000) |
| xenophonia | A speech defect marked by an alteration in accent and intonation. Origin: xeno-+ G. Phone, voice (05 Mar 2000) |