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The dram (alternative British spelling drachm; apothecary symbol ʒ or ℨ; [a] abbreviated dr) [4] [5]: C-6–C-7 [6] is a unit of mass in the avoirdupois system, and both a unit of mass and a unit of volume in the apothecaries' system. [5] It was originally both a coin and a weight in ancient Greece. [7]
A volume of liquid that was approximately that of an apothecaries' ounce of water was called a fluid ounce, and was divided into fluid drachms and sometimes also fluid scruples. The smallest unit of liquid volume was traditionally a drop (Latin gutta). [29] Although nominally defined as a sixtieth of the fluid drachm, in practice the drop was a ...
The minim (abbreviated min, ♏︎ or ♍︎) is a unit of volume in both the imperial and U.S. customary systems of measurement. Specifically, in the imperial system, it is 1 ⁄ 60 of an imperial fluid drachm [1] [2] or 1 ⁄ 480 of an imperial fluid ounce; in the U.S. customary system, it is 1 ⁄ 60 of a US customary fluid dram or 1 ⁄ 480 of a US customary fluid ounce.
English units were the units of measurement used in England up to 1826 ... the fluid drachm and minim ... water has a density of ≃ 0.9988 g ...
The dram (alternative British spelling drachm; apothecary symbol ʒ or ℨ; [lower-alpha 1] abbreviated dr) [4] [5]: C-6–C-7 [6] is a unit of mass in the avoirdupois system, and both a unit of mass and a unit of volume in the apothecaries' system. [5] It was originally both a coin and a weight in ancient Greece. [7]
In the United Kingdom, subsequent to the adoption of the minim and the creation of the British imperial system of units in the 1820s, a drop is defined as 1 British imperial minim, [3] the equivalence of 1 / 60 of a British imperial fluid drachm or 1 / 480 of a British imperial fluid ounce.
In all of these systems, the fundamental unit is the pound (lb), and all other units are defined as fractions or multiples of a pound. The tables of imperial troy mass and apothecaries' mass are the same as the corresponding United States tables, except for the British spelling "drachm" in the table of apothecaries' mass.
Pinch ( 1 / 2 salt spoon [30] or 1 / 4 teaspoon: an amount of space that can accommodate 15 minims ( 1 / 4 fluid drachm or 1 / 32 fluid ounce) of liquid), if it is a dry ingredient; Drop (1 minim, [34] 1 / 60 fluid drachm, or 1 / 480 fluid ounce), if it is a liquid