1. Official permission or approval
   "authorisation for the program was renewed several times";
   - authority, authorization, sanction, clearance
    
2. The act of conferring legality, sanction or formal warrant
   "The new law provided authorisation to minority communities";
   - authorization, empowerment
    
3. The power or right to give orders or make decisions
   "he has the authorisation to issue warrants";
   - authority, authorization, potency, dominance, say-so
    
4. (law) a document giving an official instruction or command
   "She received authorisation to access the classified files";
   - mandate, authorization

Derived forms: authorisations

See also: authorised [Brit], authoritative, authorized, unauthorised [Brit], unauthorized

Type of: control, direction, instrument, legal document, legal instrument, management, official document, permission

Encyclopedia: Authorisation