Meaning of BETA in English


n.1 the second letter of the Greek alphabet (B, {szlig}).

2 a second-class mark given for a piece of work or in an examination.

3 Astron. the second brightest star in a constellation.

4 the second member of a series.

Phrases and idioms:

beta-blocker Pharm. a drug that prevents the stimulation of increased cardiac action, used to treat angina and reduce high blood pressure. beta particle (or ray) a fast-moving electron emitted by radioactive decay of substances (orig. regarded as rays).

Etymology: ME f. L f. Gk

Oxford English vocab.      Оксфордский английский словарь.