Noun carat has 2 senses
  1. carat - a unit of weight for precious stones = 200 mg
    --1 is a kind of
    metric weight unit, weight unit
    --1 is a part of gram, gramme, gm, g
    --1 has parts: decigram, dg
  2. Karat, carat - the unit of measurement for the proportion of gold in an alloy; 18-karat gold is 75% gold; 24-karat gold is pure gold
    --2 is a kind of unit of measurement, unit
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