Meaning of ALPHA in English

ALPHA

I. ˈal-fə noun

Etymology: Middle English, from Latin, from Greek, of Semitic origin; akin to Hebrew āleph aleph

Date: 13th century

1. : the 1st letter of the Greek alphabet — see alphabet table

2. : something that is first : beginning

3. : alpha wave

4. : alpha particle

II. adjective

Date: 1863

1. : closest in the structure of an organic molecule to a particular group or atom — symbol α

α-substitution

2. : socially dominant especially in a group of animals

an alpha male

3. : alphabetic

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.