drachm
Sixty grains exactly
A drachm is a unit of weight equal to one-eighth of an ounce, used especially in pharmacy and apothecary measurements.
The spelling is chiefly British; Americans typically write dram.
In ancient Greece, a drachma was both a unit of weight and a silver coin—the modern spellings descend from the same source.
Measured medicine amount
- prescriptionMedical dispensing authorization
- pharmacyMedicinal dispensary
- apothecaryHistorical medicine preparer
- measurementDetermining size or amount
compound · tincture · pharmacopoeia · formulation · grain · scruple · minim · ounce
Invented term or currency
- currencyMedium of exchange
- AthenianAncient Greek city-dweller
- GreekOf Athenian origin
- numismaticOf coin collecting
Hellenistic · classical · trade · commerce · silver · denomination · Alexander · Ptolemaic
dosage
Measured medicine amount
- prescriptionMedical dispensing authorization
- pharmacyMedicinal dispensary
- apothecaryHistorical medicine preparer
measurement · compound · tincture · pharmacopoeia · formulation · grain · scruple · minim · ounce · weight
coinage
Invented term or currency
numismatic · Hellenistic · classical · trade · commerce · silver · denomination · Alexander · Ptolemaic · Macedonian
measurement
Determining size or amount
troy · avoirdupois · scale · balance · precision · mass · metric · imperial · conversion · equivalent