brilliancy

noun
bril·lian·cy | \-yən(t)-sē \
plural brilliancies

Definition of brilliancy 

2 : an instance of brilliance

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Examples of brilliancy in a Sentence

the brilliancy of the diamond is shown to good effect by the museum's lighting

First Known Use of brilliancy

1732, in the meaning defined at sense 1

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The first known use of brilliancy was in 1732

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