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Why is “pound” abbreviated as “lb”?

Saturday, 16 November 2024

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Have you ever wondered why "pound" is abbreviated as "lb"? The surprising origins of this and other common weight abbreviations trace back to ancient Rome.
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Why is "pound" abbreviated as "lb"?

Have you ever wondered why "pound" is abbreviated as "lb"? The surprising origins of this and other common weight abbreviations trace back to ancient Rome.

Set of 2 pound dumbbell weights

T he late great comedian Norm Macdonald commented: "ID… there's a strange abbreviation when you think about it. 'I' is short for 'I,' and then 'D' is short for 'dentification.'"

Macdonald wasn't quite right with his assessment, but he was correct in that some abbreviations can be more confusing than they are helpful. If you can't decipher what an abbreviation stands for, should the word or phrase be shortened at all? Even everyday terms may boggle the mind: For example, why is "pound" abbreviated as "lb"? Maybe you memorized the term in school, or maybe one day you asked the deli manager what that "LB" on the sticker meant, but it's not an easy one to decipher on its own, because the word and its abbreviation don't share a single letter. There is an answer as to why it's shortened that way, though, and it dates back to ancient Rome.

The Romans used a basic unit of weight called a libra (~0.722 pounds), derived from the Latin for "scale" or "balance." Libra pondo is a Latin phrase that translates to "a pound by weight." When these terms reached Britain, they became the standard for weighing gold and silver. The abbreviation "lb" is a shortening of libra that was carried over to the English word "pound." The British currency is also called the pound, and the £ symbol represents libra.

Another concept worth mentioning is the Roman uncia, a Latin word that translates to "one-twelfth." It was used by the Romans as a unit of measurement for one-twelfth of a libra, and it became the inspiration for the English word "ounce." So, where did that "z" in the abbreviation "oz" come from? On the journey from Latin to English, there was a detour with the Italian word onza.

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Index Pointing at the Viewer

Meaning: Indicates a pointing finger; often used to represent "you."


Evolution: There are many hand and finger options on the emoji keyboard, but this is the most detailed, with a shadow giving the 3D effect of an index finger pointing out at the recipient. It was part of the 2021 release, which included Heart Hands 🫶and many skin-tone variations of Handshake 🫱🏼‍🫲🏿.


Usage: [Title on a poster:] We Want YOU 🫵 To Sign Up for the Blood Drive

Index Pointing at the Viewer emoji

Index Pointing at the Viewer

Meaning: Indicates a pointing finger; often used to represent "you."


Evolution: There are many hand and finger options on the emoji keyboard, but this is the most detailed, with a shadow giving the 3D effect of an index finger pointing out at the recipient. It was part of the 2021 release, which included Heart Hands 🫶and many skin-tone variations of Handshake 🫱🏼‍🫲🏿.


Usage: [Title on a poster:] We Want YOU 🫵 To Sign Up for the Blood Drive

Eight Bears: Mythic Past and Imperiled Future by Gloria Dickie

Eight Bears: Mythic Past and Imperiled Future

Gloria Dickie

"Eight Bears" is about the many ways in which we've made the planet uninhabitable for some of its most majestic species, especially polar bears. Dickie takes the reader on a global journey to examine the fraught relationships between human and bear.

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We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Eight Bears: Mythic Past and Imperiled Future by Gloria Dickie

Eight Bears: Mythic Past and Imperiled Future

Gloria Dickie

"Eight Bears" is about the many ways in which we've made the planet uninhabitable for some of its most majestic species, especially polar bears. Dickie takes the reader on a global journey to examine the fraught relationships between human and bear.

Michael Nordine, Senior Writer and Editor

Shop now

We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

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What Does "Deadhead" Mean to Flight Attendants?

If you're wondering about a cross-check before takeoff, or where the airport's apron is, we've rounded up some popular air travel terms to ensure that your next trip to the skies is a breeze.

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