1. a unit of mass in the metric system equal to one thousandth of a gram

Examples

• The doctor prescribed 500 milligrams of the antibiotic.
• A typical aspirin tablet contains 325 milligrams of the active ingredient.
• The vitamin C supplement provides 1000 milligrams per serving.
• Laboratory scales can measure substances down to the milligram.
• The medication dosage is carefully calculated in milligrams per kilogram of body weight.
• One milligram is abbreviated as mg in scientific notation.