Толковый словарь английского языка Oxford English Reference - alpha
Alpha
alpha
n. 1 the first letter of the Greek alphabet (A). 2 a first-class mark given for a piece of work or in an examination. 3 Astron. the chief star in a constellation. Phrases and idioms alpha and omega the beginning and the end; the most important features. alpha particle (or ray) a helium nucleus emitted by a radioactive substance, orig. regarded as a ray. Etymology: ME f. L f. Gk
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1.
I. noun Etymology: Middle English, from Latin, from Greek, of Semitic origin; akin to Hebrew āleph aleph Date: 13th century the 1st letter of the Greek ~bet, something that is first ; beginning, ~ wave, ~ particle, II. adjective Date: 1863 closest in the structure of an organic molecule to a particular group or atom, socially dominant especially in a group of animals , ~betic ...Толковый словарь английского языка
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