DICT.TW Dictionary Taiwan

 alpha and omega
 始終,全部;主要部分

 o·me·ga n.
 1. The last letter of the Greek alphabet. See Alpha.
 2. The last; the end; hence, death.
    =\“Omega! thou art Lord,” they said.\=   --Tennyson.
 Alpha and Omega, the beginning and the ending; hence, the chief, the whole.
    The alpha and omega of science.   --Sir J. Herschel.
 ◄ ►

 alpha and omega
      n 1: the first and last; signifies God's eternity
      2: the basic meaning of something; the crucial part