xenon

play
noun xe·non \ˈzē-ˌnän, ˈze-\

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 (such as flashtubes) and in scientific research — see element table

Recent Examples of xenon from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'xenon.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of xenon

Greek, neuter of xenos strange


XENON Defined for English Language Learners

xenon

play
noun

Definition of xenon for English Language Learners

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


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



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).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

lethargy or dullness

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time-traveler-quiz-which-word-came-first
  • Which came first?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

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

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!