Pound (mass)

A pound (usually abbreviated as lb, plural lbs) is a unit used to measure the mass of something. It is used in the imperial system and the United States customary system. It is related to the Pound (force). There are a number of different definitions. The most commonly used definition today is the international avoirdupois pound. This is equal to 0.45359237 kilograms, and is divided into 16 avoirdupois ounces.[1]

The abbreviation lb is for the Latin word libra, meaning weight.

  1. United States National Bureau of Standards (1959-06-25). "Notices "Refinement of values for the yard and the pound"" (PDF). Retrieved 2006-08-12.

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