1. a document giving an official instruction or command
(synonym) mandate, authorisation
(hypernym) legal document, legal instrument, official document, instrument
(attribute) authorized, authorised
(classification) law, jurisprudence
2. the power or right to give orders or make decisions; "he has the authority to issue warrants"; "deputies are given authorization to make arrests"
(synonym) authority, authorisation, dominance, say-so
(hyponym) power of appointment
3. official permission or approval; "authority for the program was renewed several times"
(synonym) authority, authorisation, sanction
(derivation) authorize, authorise, pass, clear
4. the act of conferring legality or sanction or formal warrant
(synonym) authorisation, empowerment
(hypernym) management, direction
(derivation) empower, authorise, authorize