Meaning of GAMMA in English

GAMMA

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.

Phrases and idioms:

gamma radiation (or rays) electromagnetic radiation of very short wavelength emitted by some radioactive substances.

Etymology: ME f. Gk

Oxford English vocab.      Оксфордский английский словарь.