A unit of weight in the metric or centesimal system, the equivalent of 15.432358 gr or 0.03527 avoirdupois ounce.
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gram or chiefly Brit gramme 'gram n
1) 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 abbr. g
2) the weight of a gram under standard gravity
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n.
a unit of mass equal to one thousandth of a kilogram. Symbol: g.
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(g) (gram) [Gr. gramma a small weight] a unit of mass in the SI system; it is one thousandth of a kilogram (q.v.).Medical dictionary. 2011.