milligram mil·li·gram (mĭl'ĭ-grām')
n.
Abbr. mg
A metric unit of mass equal to one thousandth (10-3) of a gram.
| milligram (mĭl'ĭ-grām') Pronunciation Key
A unit of mass or weight in the metric system equal to 0.001 gram. See Table at measurement. |