Meaning of GAMMA in English

n. 1 the third letter of the Greek alphabet. 2 a third-class mark given for a piece of work or in an examination. 3 Astron. the third brightest star in a constellation. 4 the third member of a series. gamma radiation (or rays) electromagnetic radiation of very short wavelength emitted by some radioactive substances.

[ ME f. Gk ]

Concise Oxford English dictionary.      Краткий оксфордский словарь английского языка.