Dictionary

antimatter

noun an·ti·mat·ter \ˈan-tē-ˌma-tər, ˈan-ˌtī-\

Definition of ANTIMATTER

:  matter composed of antiparticles
ADVERTISEMENT

First Known Use of ANTIMATTER

1950

Browse

Next Word in the Dictionary: antimechanizedPrevious Word in the Dictionary: antimasquerAll Words Near: antimatter
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears