Definition of brilliant
(Entry 1 of 2)
1
: very bright : glittering
a brilliant light
2a
: striking, distinctive
a brilliant example
b
: distinguished by unusual mental keenness or alertness
brilliant scientists
brilliant
nounDefinition of brilliant (Entry 2 of 2)
: a gem (such as a diamond) cut in a particular form with numerous facets so as to have special brightness or brilliance
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Merriam-Webster unabridged
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Time Traveler for brilliant
The first known use of brilliant was circa 1681
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