What is authorisation?

Some articles on authorisation:

Armed Response Vehicle - Introduction of ARVs
... Authorisation to remove carbines required authorisation from the control room once they had contacted an officer of Association of Chief Police Officers (ACPO) rank ... was not available, a Chief Inspector could give authorisation in an emergency ...
Pradofloxacin - History
... Following submission for marketing authorisation to the European Medicines Agency (EMA) in 2004, the application was refused in 2006, prompting further studies ... Products for Veterinary Use (CVMP) recommended granting marketing authorisation of pradofloxacin by consensus in February 2011 ... Marketing authorisation of pradofloxacin was granted by the European Commission in April 2011 ...
EMV Transaction Flow - Online Transaction Authorisation
... The ARQC is sent in the authorisation message ... The issuer responds to an authorisation request with a response code (accepting or declining the transaction), an authorisation response cryptogram (ARPC) and optionally an issuer script (a string of ...
Buckinghamshire Railway - History - Authorisation
... the Buckinghamshire Railway and the authorisation of an extension from Buckingham to Banbury ...

More definitions of "authorisation":