libra

Libra is a term with several distinct meanings rooted in Latin. It is used in astronomy and astrology, history and measurement, and in modern finance and technology. While related by a common word meaning balance, each sense refers to a different concept.

In astrology and the zodiac, Libra is a sign that covers roughly late September to late October. Its symbol is the scales, and it is traditionally associated with balance and harmony. In astronomy, Libra is also the name of a southern constellation that lies between Scorpius and Virgo.

Historically, libra or libra pondo was a Roman unit of weight around 327.45 grams, consisting of 12 unciae. The term is the etymological ancestor of the modern pound and of the abbreviation lb, both drawn from the Latin libra.

In finance and technology, Libra was a proposed global digital currency initiated by Facebook (now Meta) and a coalition of partners. The project faced regulatory scrutiny and was rebranded as Diem. By 2022 the Diem Association ceased development and sold its assets, and the project did not launch as a public cryptocurrency.