#milligram__mg  1/1000 gram
  supertype:  #metric_weight_unit__weight_unit  a decimal unit of weight based on the gram
  part:  #microgram
  part of:  #metric_grain__grain  used for pearls or diamonds: 50 mg or 1/4 carat
     part of:  #decigram__dg  1/10 gram
        part of:  #carat  a unit of weight for precious stones = 200 mg
           part of:  #gram__gramme__gm__g  a metric unit of weight equal to one thousandth of a kilogram
              part of:  #dekagram__decagram__dkg__dag  10 grams
                 part of:  #hectogram__hg  100 grams
                    part of:  #kilogram__kg__kilo__key  one thousand grams; the basic unit of mass adopted under the System International d'Unites; "a kilogram is approximately 2.2 pounds"; "they were carrying two keys of heroin"
                       part of:  #myriagram__myg  one ten thousandth of a centner
                          part of:  #centner  in some European countries: a unit of weight equivalent to 50 kilograms
                             part of:  #metric_hundredweight__hundredweight__doppelzentner__centner  a unit of weight equal to 100 kilograms
                                part of:  #quintal  a unit of weight equal to 100 kilograms
                                   part of:  #metric_ton__MT__tonne__t  a unit of weight equivalent to 1000 kilograms

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