POSITRONIUM


Meaning of POSITRONIUM in English

/poz'i troh"nee euhm/ , n. Physics.

a short-lived atomic system consisting of a positron and an electron bound together.

[ 1945; POSITRON + -IUM, coined by A. E. Ruark (b. 1899), U.S. physicist ]

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .