Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

xenon

play
noun xe·non \ˈzē-ˌnän, ˈze-\

Simple Definition of xenon

  • : a chemical element that is a colorless gas and that is used especially in electric lights

Source: Merriam-Webster's Learner's Dictionary

Full Definition of xenon

  1. :  a heavy colorless and relatively inert gaseous element that occurs in air as about one part in 20 million and is used especially in specialized electric lamps (as flashtubes) and in scientific research — see element table

Origin and Etymology of xenon

Greek, neuter of xenos strange


First Known Use: 1898


Medical Dictionary

xenon

play play
noun xe·non \ˈzē-ˌnän, ˈzen-ˌän\

Medical Definition of xenon

  1. :  a heavy, colorless, and relatively inert gaseous element that occurs in air as about one part in 20 million by volume—symbol Xe; see element table




Learn More about xenon


Seen and Heard

What made you want to look up xenon? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a very small amount

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

acommadate accomodate accommodate acommodate
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ