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Where does the abbreviation "lb" come from?

Updated: 9/27/2023
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Curtis Strite

Lvl 13
3y ago

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Like several other units, the pound has Roman roots. It's descended from a roman unit called the libra. That explains the "lb" abbreviation for the pound, and the word "pound" itself comes from the Latin pondo, for "weight." The avoirdupois pounds we use today have been around since the early 14th century, when English merchants invented the measurement in order to sell goods by weight rather than volume. They based their new unit of measure as being equivalent to 7000 grains, an existing unit, and then divided each 7000-grain avoirdupois pound into 16 ounces.

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Curtis Strite

Lvl 13
3y ago
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Wiki User

11y ago

I believe it comes from "Libras", which is Latin (for scales or weights) and Spanish for "Pounds".
From the Latin Libra.

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Q: Where does the abbreviation "lb" come from?
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