xenon

xe·non   (zē'nŏn')    n.   Symbol Xe A colorless, odorless, highly unreactive gaseous element found in minute quantities in the atmosphere, extracted commercially from liquefied air and used in stroboscopic, bactericidal, and laser-pumping lamps. Atomic number 54; atomic weight 131.29; melting point -111.9°C; boiling point -107.1°C; density (gas) 5.887 grams per liter; specific gravity (liquid) 3.52 (-109°C). See Table at element. [From Greek, neuter of xenos, foreign, strange; see xeno-.]

xenon 

Main Entry: xe·non
Pronunciation: 'zE-"nän, 'zen-"än
Function: noun
: a heavy, colorless, and relatively inert gaseous element that occursin air as about one part in 20 million by volume —symbol Xe; —see ELEMENT table

xenon xe·non (zē'nŏn')
n.
Symbol Xe
A colorless, odorless, highly unreactive gaseous element found in minute quantities in the atmosphere and extracted commercially from liquefied air. Atomic number 54; atomic weight 131.29; melting point -111.8°C; boiling point -108.0°C; density (gas) 5.887 grams per liter; specific gravity (liquid) 3.52 (-109°C).

xenon   (zē'nŏn')  Pronunciation Key  Symbol Xe A colorless, odorless element in the noble gas group occurring in extremely small amounts in the atmosphere. It was the first noble gas found to form compounds with other elements. Xenon is used in lamps that make intense flashes, such as strobe lights and flashbulbs for photography. Atomic number 54; atomic weight 131.29; melting point -111.9°C; boiling point -107.1°C; density (gas) 5.887 grams per liter; specific gravity (liquid) 3.52 (-109°C). See Periodic Table.