- 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- 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
- 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