Word definition: alpha
[n] the beginning of a series or sequence; "the Alpha and Omega, the first and the last, the beginning and the end"--Revelations
[adj] first in order of importance; "the alpha male in the group of chimpanzees"; "the alpha star in a constellation is the brightest or main star"
important, of import
See Also:alphabetic character, Greek alphabet, letter, letter of the alphabet, start
\Al"pha\, n. [L. alpha, Gr. 'a`lfa, from Heb. [=a]leph, name of the first letter in the alphabet, also meaning ox.] The first letter in the Greek alphabet, answering to A, and hence used to denote the beginning. In am Alpha and Omega, the beginning and the end, the first and the last. --Rev. xxii. 13. Note: Formerly used also denote the chief; as, Plato was the alpha of the wits. Note: In cataloguing stars, the brightest star of a constellation in designated by Alpha ([alpha]); as, [alpha] Lyr[ae].