
1) An inert gas 2) Arc lamp element 3) Arc lamp gas 4) Arc-lamp gas 5) Argonon 6) Atomic number 54 7) Bubble-chamber gas 8) Chemical element 9) Chemical used in anaesthesia 10) Chemical element 11) Colorless gas 12) Colorless, gaseous element 13) Colorless, inactive gas 14) Commodore 64 game 15) Element
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1) Gas 2) Xe
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https://www.crosswordclues.com/clue/xenon

Xe. Element 54, a colorless, inert gas used to fill cathode ray tubes.
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http://antoine.frostburg.edu/chem/senese/101/glossary/x.shtml

• (n.) A very heavy, inert gaseous element occurring in the atmosphere in the proportion of one volume is about 20 millions. It was discovered by Ramsay and Travers in 1898. It can be condensed to a liquid boiling at -109
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http://thinkexist.com/dictionary/meaning/xenon/

One of the inert gases that can be found in the air in minute quantities. The others are Helium, Neon, Argon, Krypton and Radon, and are called inert gases or noble gases because of their chemical inactivity.
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http://www.bbc.co.uk/weather/weatherwise/glossary/x.shtml

chemical element, heavy and extremely rare gas of Group 0 (noble gases) of the periodic table. It was the first noble gas found to form true chemical ... [4 related articles]
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http://www.britannica.com/eb/a-z/x/1
(Xe) A xenon atom. Notice that the outer electron shell has 8 electrons and is therefore full. This makes xenon extremely unreactive. Credit: The Open Door Website Xenon is normally a colorless gas, but it emits a blue glow when excited by an electrical discharge. C...
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http://www.daviddarling.info/encyclopedia/X/xenon.html

a heavy, colorless, chemically inactive, monatomic gaseous element used for filling radio, television, and luminescent tubes. Symbol: Xe, at. wt.: 131.30, at. no.: 54.
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http://www.encyclo.co.uk/local/20728

<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) ...
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http://www.encyclo.co.uk/local/20973

(Xe) (ze´non) a chemical element, atomic number 54, atomic weight 131.30. 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...
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http://www.encyclo.co.uk/local/21001

Development code-name for Microsoft's Xbox 360.
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http://www.encyclo.co.uk/local/21676
Xen'on noun [ Greek ..., neut. of ... strange.]
(Chemistry) A very heavy, inert gaseous element occurring in the atmosphere in the proportion of one volume is about 20 millions. It was discovered by Ramsay and Travers in 1898. It can be condensed to a liquid boiling at -109° C., and to a solid whic...
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http://www.encyclo.co.uk/webster/X/2

A high intensity light, with a polished parabolic reflector. (Lighting)
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http://www.filmland.com/glossary/Dictionary.html#A
(Xe) Type: Term Pronunciation: zē′non Definitions: 1. 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%.
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http://www.medilexicon.com/medicaldictionary.php?t=100179

Xenon is a rare, gaseous element discovered in July 1898. It's symbol is Xe.
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http://www.probertencyclopaedia.com/browse/GX.HTM

is a rare gas sometimes used with electronic flash tubes and enclosed arc light sources.
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http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl

An inert gaseous chemical element, present in trace amounts in the air and used in some kinds of electric light.
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http://www.timeanddate.com/weather/glossary.html

[
n] - a colorless odorless inert gaseous element occurring in the earth`s atmosphere in trace amounts
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http://www.webdictionary.co.uk/definition.php?query=xenon

a gas that glows when exposed to electrons
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https://sciencetrek.org/sciencetrek/topics/television/glossary.cfm

Xenon is one of the rare gases formed as a result of radioactive decay of uranium fission fragments. It is colourless and inert, used to fill cathode ray tubes. Symbol Xe
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https://www.encyclo.co.uk/local/20687
Xe noun a colorless odorless inert gaseous element occurring in the earth`s atmosphere in trace amounts
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https://www.encyclo.co.uk/local/20974

A very bright, daylight balanced projection lamp, or a projector with a xenon lamp. A xenon lamp is not interchangeable with a tungsten lamp or arch lamp, but requires a different lamp housing on the projector. Because xenon lamps are daylight balanced it is sometimes advisable with color film to have the lab make a print that is balanced for xenon...
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https://www.encyclo.co.uk/local/21112

Colourless, odourless, gaseous, non-metallic element, atomic number 54, relative atomic mass 131.30. It is grouped with the noble gases (rare gases) and was long believed not to enter into reactions, but is now known to form some compounds, mostly with fluorine. It is a heavy gas present in very small quantities in the air (about one part in 20...
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https://www.encyclo.co.uk/local/21221
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