ANTIMATTER


Meaning of ANTIMATTER in English

ˈ ̷ ̷(ˌ) ̷ ̷ at anti- I +ˌ ̷ ̷ ̷ ̷ noun

( -s )

Etymology: anti- (I) + matter

: matter composed of the counterparts of ordinary matter, antiprotons instead of protons, positrons instead of electrons, and antineutrons instead of neutrons

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.