antimatter

Etymology
From. to describe matter that resists gravity in a jocular article in  titled "Potential Matter.—A Holiday Dream", but not used in a modern sense until the 1940s.

Noun

 * 1)  Matter that is composed of the antiparticles of those that constitute normal matter.
 * 2)  A form of matter that has a key property, such as charge, opposite to that of ordinary matter.
 * 1)  A form of matter that has a key property, such as charge, opposite to that of ordinary matter.

Translations

 * Arabic: مَادَّة مُضَادَّة
 * Belarusian: антырэ́чыва, антыматэ́рыя
 * Catalan: antimatèria
 * Chinese:
 * Cantonese: 反物質
 * Mandarin:
 * Czech: antihmota
 * Danish: antistof
 * Dutch:
 * Esperanto: antimaterio, malmaterio
 * Finnish: ,
 * French:
 * German:
 * Greek:
 * Hindi: प्रतिद्रव्य
 * Hungarian:
 * Icelandic:
 * Irish: frithdhamhna
 * Italian:
 * Japanese: 反物質
 * Kazakh: антизат
 * Korean:
 * Malay:
 * Mongolian:
 * Cyrillic: антиматтер, эсрэг бодис
 * Polish:
 * Portuguese: antimatéria
 * Romanian:
 * Russian: ,
 * Serbo-Croatian:
 * Spanish:
 * Swedish:
 * Tagalog: labambutang
 * Thai:
 * Vietnamese: phản vật chất (反物質)
 * Welsh: gwrthfater