authorisation has definitions from the fields of law,writing
1
[ noun ] (law) the power or right to give orders or make decisions

Examples

"he has the authority to issue warrants" "deputies are given authorization to make arrests"

2
[ noun ] official permission or approval

Examples

"authority for the program was renewed several times"

Related terms

permission grant sanction

3
[ noun ] (writing) a document giving an official instruction or command
4
[ noun ] the act of conferring legality or sanction or formal warrant
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