ˈeksēˌat noun
( -s )
Etymology: Latin, let him or her go out, 3d person singular present subjunctive of exire to go out, from ex- ex- (I) + ire to go — more at issue
1. Britain : a permit for temporary absence (as from a college or monastery)
2. : a letter of permission allowing a cleric to transfer from one diocese to another : a letter of excardination