What does libra mean?
Libra usually refers to the zodiac sign and constellation shaped like a set of balance scales. It is the seventh sign of the zodiac, traditionally associated with balance, harmony, fairness, and relationships, and it usually occurs with the definite article as “Libra” when naming the sign. In historical contexts, libra can also mean an ancient Roman unit of weight, approximately 322 grams or slightly less than a modern pound. The Roman measure is not normally used in contemporary everyday speech, so the astronomical and astrological senses are much more familiar today. The word ultimately comes from Latin libra, meaning “scales” or “pound,” which also explains its association with weighing and equilibrium. Although Libra belongs to a modern horoscope, its name preserves the ancient visual idea of justice and balanced scales.
nounLibra is the zodiacal constellation and sign represented by a pair of scales. The name also denotes an ancient Roman unit of weight equal to approximately 322 grams.
- The zodiacal constellation and astrological sign represented by a pair of scales.
- An ancient Roman unit of weight equal to approximately 322 grams.
"The scales of Libra become visible in the evening sky during autumn."
"She was born in October and her horoscope places her under Libra."
"The merchant recorded the quantity of grain in libras and pounds."
Librae is the standard Latin plural in historical references to the Roman unit; as a constellation, the conventional genitive is Librae.
"The inscription records a payment of twelve librae of silver."
The symbol “lb” for the pound comes from libra, Latin for “scales” and “pound.”
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does libra come from?
The word comes from Latin libra, meaning “scales” or “pound,” referring both to a balance and to a unit of weight. The Romans adopted the same term for the constellation associated with the scales. Its Latin root also underlies words such as librate and equilibrium, which continue to express ideas of balance and equal weight.
Related word forms
How libra is actually used
As the name of the zodiac sign, Libra is normally capitalized. In historical writing about Roman weights, it is generally lowercase and may be treated as a Latin noun with the plural librae.
Easily confused with libra
Libra is the name of a constellation and an ancient Roman unit of weight, whereas lira is the currency of Italy.