rev·e·la·tion 
(rĕv′ə-lāshən)
(rĕv′ə-lāshən)n.
1.
a. The act of revealing or disclosing.
b. Something revealed, especially a dramatic disclosure of something not previously known or realized.
c. A sudden insight or idea: "I'd had the idea to dig up Dad's coffin ... I was lying in bed and I had the revelation, like a simple solution to an impossible problem" (Jonathan Safran Foer).
2. Theology A manifestation of divine will or truth.
3. Revelation See Table at Bible.
[Middle English revelacion, from Old French revelation, from Latin revēlātiō, revēlātiōn-, from revēlātus, past participle of revēlāre, to reveal; see REVEAL1.]