: a metric unit of mass equal to ¹/₁₀₀₀ kilogram and nearly equal to the mass of one cubic centimeter of water at its maximum density see Metric System Table
2
: the weight of a gram under the acceleration of gravity
obsolete Portuguese (now spelled grão), grain, from Latin granum
Noun (2)
French gramme, from Late Latin gramma, a small weight, from Greek grammat-, gramma letter, writing, a small weight, from graphein to write — more at carve