car·at
variant spelling of karat
: a unit of fineness for gold equal to ¹/₂₄ part of pure gold in an alloy
carat
noun (2)Definition of carat (Entry 2 of 2)
: a unit of weight for precious stones equal to 200 milligrams
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Merriam-Webster unabridged
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Time Traveler for carat
The first known use of carat was in 1555
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