名詞 revocation:

1. the state of being cancelled or annulled
   同義詞：annulment
2. the act (by someone having the authority) of annulling something previously done

rev.o.ca.tion

n.（名詞）
The act or an instance of revoking.
撤消：撤消或廢除的行為或?qū)嵗?/br>
來源：
Middle English revocacion
中古英語 revocacion
from Old French
源自 古法語
from Latin revoc3tiô revoc3tiôn-
源自 拉丁語 revoc3tiô revoc3tiôn-
from revoc3tus [past participle of] revoc3re [to call back] * see revoke
源自 revoc3tus [] revoc3re的過去分詞 [召回] *參見 revoke

【引伸】
rev.ocato.ry