alpha and omega

noun

1. the beginning and the end.

2. the basic or essential element or elements.

   the alpha and omega of political reform.

alpha and omega

noun

1. the first and last, a phrase used in Revelation 1:8 to signify God's eternity

2. the basic reason or meaning; most important part

alpha and omega

¹

1. The beginning and the end. In the Greek alphabet, in which the New Testament was written, alpha is the first letter and omega is the last. In the Book of Revelation, God says, “I am Alpha and Omega, the first and the last,” meaning that God remains from the beginning to the end of time.

alpha and omega

²

1. The beginning and the end. In the New Testament Book of Revelation, God says, “I am Alpha and Omega,” meaning that he is the beginning and end of all things. In the Greek alphabet, alpha is the first letter and omega is the last.

Idioms and Phrases

The beginning and the end, the first and the last, as in She had to master the alpha and omega of the new computer program before she could even begin. This idiom and its meaning, based on the first and last letters of the Greek alphabet, appears in the New Testament (Revelation 1:8): “I am Alpha and Omega, the beginning and the ending, saith the Lord,” where it is repeated three more times.