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.

(euphemistic) Disobedience, a disinclination to obey.

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

(Canada, US law) The claimed legitimization of a person's acts by his/her role as an agent of governmental power.

plural of authorized term

(information science) A term prescribed by a controlled vocabulary as the one preferable to its synonyms, such as frequency preferable to pitch.

plural of authoring program

plural of certificate authority

That author of a joint paper who is considered by the publisher to have submitted it for publication.

plural of corresponding author