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Dram (unit)
The dram (alternative British spelling drachm; apothecary symbol ʒ or ℨ; abbreviated dr) is a unit of mass in the avoirdupois system, and both a unit of mass and a unit of volume in the apothecaries' system. It was originally both a coin and a weight in ancient Greece. The unit of volume is more correctly called a fluid dram, fluid drachm, fluidram or fluidrachm (abbreviated fl dr, ƒ 3, or fʒ).
A coin weighing one drachma is known as a stater, drachm, or drachma. The Ottoman dirhem (Ottoman Turkish: درهم) was based on the Sassanian drachm, which was itself based on the Roman dram/drachm.
The British Weights and Measures Act 1878 introduced verification and consequent stamping of apothecary weights, making them officially recognized units of measurement. By 1900, Britain had enforced the distinction between the avoirdupois and apothecaries' versions by making the spelling different:
In the avoirdupois system, the dram is the mass of 1⁄256 pound or 1⁄16 ounce. The dram weighs 27+11⁄32 grains, or exactly 1.7718451953125 grams.
In the apothecaries' system, which was widely used in the United States until the middle of the 20th century, the dram is the mass of 1⁄96 pounds apothecaries (lb ap), or 1⁄8 ounces apothecaries (oz ap or ℥) (the pound apothecaries and ounce apothecaries are equal to the troy pound (lb t), and troy ounce (oz t), respectively). The dram apothecaries is equal to 3 scruples (s ap or ℈) or 60 grains (gr), or exactly 3.8879346 grams.
"Dram" is also used as a measure of the powder charge in a shotgun shell, representing the equivalent of black powder in drams avoirdupois.
The fluid dram (or fluid drachm in British spelling) is defined as 1⁄8 fluid ounce, and is equal to:
In the early 19th century, a teaspoonful had been considered equal to one fluid dram—60 minims—for medical prescriptions. However, by 1876 the teaspoon had grown to 80–85 minims, making the equivalence unsuitable for medicinal dosage. Today's US teaspoon is equivalent to 4.92892159375 ml, which is also 1⁄6 US fluid ounces, 1+1⁄3 US fluid drams, or 80 US minims.
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Dram (unit) AI simulator
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Dram (unit)
The dram (alternative British spelling drachm; apothecary symbol ʒ or ℨ; abbreviated dr) is a unit of mass in the avoirdupois system, and both a unit of mass and a unit of volume in the apothecaries' system. It was originally both a coin and a weight in ancient Greece. The unit of volume is more correctly called a fluid dram, fluid drachm, fluidram or fluidrachm (abbreviated fl dr, ƒ 3, or fʒ).
A coin weighing one drachma is known as a stater, drachm, or drachma. The Ottoman dirhem (Ottoman Turkish: درهم) was based on the Sassanian drachm, which was itself based on the Roman dram/drachm.
The British Weights and Measures Act 1878 introduced verification and consequent stamping of apothecary weights, making them officially recognized units of measurement. By 1900, Britain had enforced the distinction between the avoirdupois and apothecaries' versions by making the spelling different:
In the avoirdupois system, the dram is the mass of 1⁄256 pound or 1⁄16 ounce. The dram weighs 27+11⁄32 grains, or exactly 1.7718451953125 grams.
In the apothecaries' system, which was widely used in the United States until the middle of the 20th century, the dram is the mass of 1⁄96 pounds apothecaries (lb ap), or 1⁄8 ounces apothecaries (oz ap or ℥) (the pound apothecaries and ounce apothecaries are equal to the troy pound (lb t), and troy ounce (oz t), respectively). The dram apothecaries is equal to 3 scruples (s ap or ℈) or 60 grains (gr), or exactly 3.8879346 grams.
"Dram" is also used as a measure of the powder charge in a shotgun shell, representing the equivalent of black powder in drams avoirdupois.
The fluid dram (or fluid drachm in British spelling) is defined as 1⁄8 fluid ounce, and is equal to:
In the early 19th century, a teaspoonful had been considered equal to one fluid dram—60 minims—for medical prescriptions. However, by 1876 the teaspoon had grown to 80–85 minims, making the equivalence unsuitable for medicinal dosage. Today's US teaspoon is equivalent to 4.92892159375 ml, which is also 1⁄6 US fluid ounces, 1+1⁄3 US fluid drams, or 80 US minims.