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ultra vires

[uhl-truh vahy-reez] /ˌʌl trə ˈvaɪ riz/
noun, Law.
1.
beyond the legal power or authority of a corporation, corporate officer, etc. (opposed to intra vires).
Origin
1785-1795
1785-95; < Latin ultrā vīrēs literally, beyond strength
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ultra-vires

ultra vires

/ˈvaɪriːz/
adverb, adjective
1.
(predicative) (law) beyond the legal power or authority of a person, corporation, agent, etc
Word Origin
Latin, literally: beyond strength
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for ultra-vires

ultra vires

Latin, literally "beyond powers," from vires "strength, force, vigor, power," plural of vis.

Online Etymology Dictionary, © 2010 Douglas Harper
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