antimatter

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈæntimætər/

US:USA pronunciation: IPAUSA pronunciation: IPA/ˈæntiˌmætɚ, ˈæntaɪ-/

US:USA pronunciation: respellingUSA pronunciation: respelling(an′tē mat′ər, an′tī-)



WordReference Random House Learner's Dictionary of American English © 2025
an•ti•mat•ter /ˈæntiˌmætɚ, ˈæntaɪ-/USA pronunciation   n. [uncountable]
  1. Physicsmatter composed of antiparticles.

WordReference Random House Unabridged Dictionary of American English © 2025
an•ti•mat•ter  (an′tē mat′ər, an′tī-),USA pronunciation n. [Physics.]
  1. Physicsmatter composed only of antiparticles, esp. antiprotons, antineutrons, and positrons.
  • anti- + matter 1950–55

Collins Concise English Dictionary © HarperCollins Publishers::
antimatter / ˈæntɪˌmætə/
  1. a form of matter composed of antiparticles, such as antihydrogen, consisting of antiprotons and positrons
'antimatter' also found in these entries (note: many are not synonyms or translations):
antiatom - antiparticle - antiworld

Forum discussions with the word(s) "antimatter" in the title:


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