authorisation

au•thor•ize /ˈɔθəˌraɪz/USA pronunciation v., -ized, -iz•ing.

to give authority to:[~ + object + to + verb]I am not authorized to pay you now.
to give authority for:[~ + object]He authorized increased spending on medical research.

au•thor•ize (ô′thə rīz′),USA pronunciation v.t., -ized, -iz•ing.

to give authority or official power to;
empower:to authorize an employee to sign purchase orders.
to give authority for;
formally sanction (an act or proceeding):Congress authorized the new tax on tobacco.
to establish by authority or usage:an arrangement long authorized by etiquette books.
to afford a ground for;
warrant;
justify.

Also,[esp. Brit.,] au′thor•ise′.

au′thor•iz′a•ble, adj.
au′thor•iz′er, n.

Collins Concise English Dictionary © HarperCollins Publishers::

authorize, authorise /ˈɔːθəˌraɪz/ vb (transitive)

ˌauthoriˈzation, ˌauthoriˈsation n

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authorisation
Authorisation <for><of> sale
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