xenon

xenon

 [ze´non]

a chemical element, atomic number 54, atomic weight 131.30, symbol Xe. (See Appendix 6.) The radioactive isotope ¹³³Xe is used in assessment of pulmonary function, lung imaging, and cerebral blood flow studies.

xenon-133 a radioisotope of xenon having a half-life of 5.3 days and a principal gamma ray photon energy of 81 keV; used for pulmonary ventilation imaging. Symbol ¹³³Xe.

xe·non (Xe),

(zē'non),

A gaseous element, atomic no. 54, atomic wt. 131.29; present in minute proportion (0.087 ppm) in the dry atmosphere; produces general anesthesia in concentrations of 70%.

[G. xenos, a stranger]

xenon

/xe·non/ (ze´non) a chemical element, at. no. 54, symbol Xe. The radioactive isotope 133Xe is used in assessment of pulmonary function, lung imaging, and cerebral blood flow studies.

xenon (Xe)

[zen′on, zē′non]

Etymology: Gk, xenos, strange

a nonreactive gaseous nonmetallic element. Its atomic number is 54, and its atomic mass is 131.30.

xe·non

(zē'non)

A gaseous element, atomic no. 54, atomic wt. 131.29, present in minute proportion in the atmosphere; produces general anesthesia in concentrations of 70 vol.%.

[G. xenos, a stranger]

xenon

a chemical element, atomic number 54, atomic weight 131.30, symbol Xe. See Table 6.

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xenon-133

a radioisotope of xenon having a half-life of 5.3 days and a principal gamma ray photon energy of 81 keV; used for pulmonary ventilation imaging. Symbol ¹¹³Xe.