noun that which is revealed.
2. revelation ·noun the act of revealing divine truth.
3. revelation ·noun that which is revealed by god to man; ·esp., the bible.
4. revelation ·noun the act of revealing, disclosing, or discovering to others what was before unknown to them.
5. revelation ·noun specifically, the last book of the sacred canon, containing the prophecies of st. john; the apocalypse.