rev·o·ca·tion (rěv'ə-kā'shən) n. The act or an instance of revoking.
[Middle English revocacion, from Old French, from Latin revocātiō, revocātiōn-, from revocātus, past participle of revocāre, to call back; see revoke.] rev'o·ca·to'ry (rěv'ə-kə-tôr'ē, -tōr'ē) adj.