antimatter

== English == === Alternative forms === anti-matter === Etymology === From anti- +‎ matter. Coined by British physicist Arthur Schuster in 1898 to describe matter that resists gravity in a jocular article in Nature titled "Potential Matter.—A Holiday Dream", but not used in a modern sense until the 1940s. === Pronunciation === (General American) IPA(key): /ˈæn.tiˌmæt.ɚ/, /ˈænˌtaɪˌmæt.ɚ/, [ˈæn.tiˌmæ.ɾɚ], [ˈæ.ɾ̃iˌmæ.ɾɚ], [ˈæ.niˌmæ.ɾɚ] === Noun === antimatter (usually uncountable, plural antimatters) (physics) Matter that is composed of the antiparticles of those that constitute normal matter. (physics) A form of matter that has a key property, such as charge, opposite to that of ordinary matter. ==== Derived terms ==== antimatter rocket ==== Translations ==== ==== See also ==== antiparticle