alpha

alpha n

indecl., ἄλφα, the first letter of the Greek alphabet: hoc discunt ante alpha et beta, i. e. before the alphabet, Iu.

alpha
alpha, n. indecl., = ἄλφα, the Greek name of the first letter of the alphabet : hoc discunt ante alp...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
Alpha
·noun The first letter in the Greek alphabet, answering to A, and hence used to denote the beginning...

Webster's Dictionary of the English Language