Definition of ultra vires in English:

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ultra vires

Pronunciation: /ˌəltrə ˈvīrēz/

adjective& adverb

Law
Beyond one’s legal power or authority: [as adjective]: jurisdictional errors render the decision ultra vires
More example sentences
  • As a result, a taxpayer who has made a payment pursuant to ultra vires legislation has a right to restitution.
  • It is not suggested that Byelaw 20 was itself ultra vires the powers which the primary legislation conferred upon the British Railways Board.
  • An ultra vires act is one beyond the purposes or powers of a corporation.

Origin

Latin, literally 'beyond the powers'.

For editors and proofreaders

Syllabification: ul·tra vi·res

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