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supremacy

[suh-prem-uh-see, soo-] /səˈprɛm ə si, sʊ-/
noun
1.
the state of being supreme.
2.
supreme authority or power.
Origin of supremacy
1540-1550
1540-50; supreme1 + -acy
Related forms
presupremacy, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for supremacy

supremacy

/sʊˈprɛməsɪ; sjʊ-/
noun
1.
supreme power; authority
2.
the quality or condition of being supreme
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for supremacy
n.

1540s, from supreme + -acy.

Online Etymology Dictionary, © 2010 Douglas Harper
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