authorization noun
ADJ. formal, official, written | prior You will need prior authorization from your bank.
VERB + AUTHORIZATION need, require | ask for, seek He asked for authorization to proceed with the plan. | get, have, obtain | give sb, grant (sb) | refuse (sb) The government will probably refuse authorization under these conditions. | revoke
PREP. with/without ~ You cannot take a day off without authorization. | ~ for Formal authorization for the trip was given last week. | ~ from The change of plan would require authorization from the minister.
You can also check other dicts: authorization (English, 中文解释 ), wordnet sense, Collins Definition