ANTIMATTER


Meaning of ANTIMATTER in English

an ‧ ti ‧ mat ‧ ter /ˈæntiˌmætə $ -ər/ BrE AmE noun [uncountable]

a form of ↑ matter (30) (=substance which the things in the universe are made of) consisting of antiparticles

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.