noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   The chemical element (symbol Xe) with an atomic number of 54. It is a colorless, odorless, unreactive noble gas, used notably in camera flash technology. uncountable, usually
2. 2
   a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts wordnet

Synonyms

All synonyms

ammoniaatomic number 54carbon dioxidegasnitrogenoxygen

Example

More examples

"Helium, neon, argon, krypton, xenon and radon are noble gases."

Etymology

From Ancient Greek ξένος (xénos, “foreign, strange”) + -on, used for all noble gases.

Related phrases

xenon arc lampxenon chloridexenon difluoridexenon flash lampxenon fluoridexenon hexafluoridexenon hexafluoroplatinatexenon lampxenon lightxenon tetrafluoridexenon tetroxidexenon trioxide

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.