revelation

Concise Oxford English Dictionary © 2008 Oxford University Press:
revelation/revəˈleɪʃn/

▶noun

• 1 a surprising disclosure.

  ■ the revealing of something previously unknown.

  ■ a surprising or remarkable thing.

• 2 a divine or supernatural disclosure to humans.

  ■ (Revelation or informal Revelations) (in full the Revelation of St John the Divine) the last book of the New Testament, recounting a divine revelation of the future to St John.

– derivatives
revelational adjective.

– origin ME: from OFr., or from late L. revelatio(n-), from revelare (see reveal1).