Definition of: ultra vires

(ul′trə vī′rēz) Latin
1. Law Beyond the lawful capacity or powers: said especially of corporations as to acts or contracts not within the scope of the powers conferred upon them and which are ipso facto void: applied also to the acts which although within their powers have been done without their required consent, as in the case of powers delegated to directors.
2. Figuratively, not permissible; forbidden: a colloquial use.