Dram (unit)

Dram (unit)

A dram unit

The dram is a unit of mass or weight that has been used historically in various systems of measurement. It is still in use today in some contexts, particularly in the field of pharmacy. The term "dram" is derived from the Greek word drachmē, which means "a handful."

History

The dram has a long history, dating back to ancient civilizations. It was originally used as a unit of volume in ancient Greece, where it represented a measure of liquid. Over time, the dram evolved and became associated with weight rather than volume.

In the medieval period, the dram was widely used in Europe as a unit of weight. It was commonly used for measuring precious metals, such as gold and silver. The exact weight of the dram varied between different regions and countries, leading to inconsistencies in trade and commerce.

Modern Usage

In modern times, the dram is primarily used in the field of pharmacy. It is a unit of mass that is used to measure the weight of medications and other pharmaceutical substances. The dram is particularly useful in pharmacy because it allows for precise measurements of small quantities.

The dram is also used in some countries as a unit of weight for precious stones, such as diamonds. In these contexts, the dram is often used alongside other units, such as carats, to provide more accurate measurements.

Conversion

The conversion of drams to other units of weight can vary depending on the system of measurement being used. In the avoirdupois system, which is commonly used in the United States, 1 dram is equal to approximately 1.772 grams. In the troy system, which is used for measuring precious metals, 1 dram is equal to approximately 3.8879 grams.

See Also

• Unit of measurement
• Pharmacy
• Avoirdupois system
• Troy system