Share this entry

Share this page

antimatter

Line breaks: anti|mat¦ter
Pronunciation: /ˈantɪˌmatə
 
/

Definition of antimatter in English:

noun

[mass noun] Physics
Matter consisting of elementary particles which are the antiparticles of those making up normal matter.
Example sentences
  • In the enormous densities of the early moments of the Big Bang the result would have been a catastrophic annihilation of matter and antimatter into radiation.
  • There is both matter (such as electrons) and oppositely charged antimatter (such as positrons).
  • Paul Dirac predicted the existence of antimatter with his relativistic wave equation in 1928.

Definition of antimatter in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day emulous
Pronunciation: ˈemyələs
adjective
seeking to emulate or imitate someone or something