(computing) An organization that issues digital certificates for use by other parties.

plural of authority figure

In local government, a single-tier authority which replaces a two-tier structure. For example, in England, county councils are abolished and their responsibilities are transferred to boroughs and local government districts (but this only applies to some counties, not all). In some cases complete counties, such as Cornwall and Northumberland, are now unitary authorities without any subdivision into local government districts.

(Australia, New Zealand, UK, law) A body set up by law which is authorised to enforce legislation on behalf of the relevant country or state.

A government organization responsible for collecting taxes.

(library science) The organization of bibliographic information by using a single distinct spelling of a name (heading) or a numeric identifier for each topic or agent.

Someone who is in a position of authority.

plural of appeal to authority

A public authority which operates a port or other transportation infrastructure.

(business) The authority of an employee acting unilaterally to commit an employer to a contract. / (business) The maximum value of such contract.