Definition of axion in English:

axion

Syllabification: ax·i·on
Pronunciation: /ˈaksēˌän
 
/

noun

Physics
A hypothetical subatomic particle postulated to account for the rarity of processes that break charge-parity symmetry. It is very light, electrically neutral, and pseudoscalar.
More example sentences
  • Or another candidate is an even more exotic particle called the axion.
  • This has helped to promote particle-DM, with candidates such as axions, neutralinos and other cold DM particles, as well as warm DM, and self-interacting DM, whose nature is not even specified.
  • Axions, if they exist at all, do so in our ordinary dimensions, but they are stable neutral particles.

Origin

1970s: from axial + -on.

Definition of axion in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day brannigan
Pronunciation: ˈbranigən
noun
a brawl or violent argument