follow Dictionary.com

Today's Word of the Day means...

xenon

[zee-non, zen-on] /ˈzi nɒn, ˈzɛn ɒn/
noun, Chemistry
1.
a heavy, colorless, chemically inactive, monatomic gaseous element used for filling radio, television, and luminescent tubes. Symbol: Xe; atomic weight: 131.30; atomic number: 54.
Origin
1898
1898; < Greek xénon, neuter of xénos strange (see -on2); name introduced by William Ramsay, the element's discoverer
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples for xenon
  • On top of that, lasers last for a long time, whereas xenon lamps burn out and need to be replaced periodically.
  • It also has instruments to monitor noble gases, such as xenon.
  • All of it was believed to be in the form of two relatively innocuous gases, xenon and krypton.
  • The headlights are active xenon lamps that follow the road around curves.
  • The package also includes xenon high-intensity discharge headlights.
British Dictionary definitions for xenon

xenon

/ˈzɛnɒn/
noun
1.
a colourless odourless gaseous element occurring in trace amounts in air; formerly considered inert it is now known to form compounds and is used in radio valves, stroboscopic and bactericidal lamps, and bubble chambers. Symbol: Xe; atomic no: 54; atomic wt: 131.29; valency: 0; density: 5.887 kg/m³; melting pt: –111.76°C; boiling pt: –108.0°C
Word Origin
C19: from Greek: something strange
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for xenon
xenon
1898, from Gk. neut. of xenos "foreign, strange," coined by its discoverer, Scottish chemist Sir William Ramsay (1852-1916); cf. krypton.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
xenon in Medicine

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).

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
xenon in Science
xenon
  (zē'nŏn')   
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of The Day

Difficulty index for xenon

Most English speakers likely know this word

Word Value for xenon

12
14
Scrabble Words With Friends