Horologium (

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

for "

clock A clock or chronometer is a device that measures and displays time. The clock is one of the oldest Invention, human inventions, meeting the need to measure intervals of time shorter than the natural units such as the day, the lunar month, a ...

") may refer to: *

Clock A clock or chronometer is a device that measures and displays time. The clock is one of the oldest Invention, human inventions, meeting the need to measure intervals of time shorter than the natural units such as the day, the lunar month, a ...

, a device for measuring the time *

Astronomical clock An astronomical clock, horologium, or orloj is a clock with special mechanisms and dials to display astronomical information, such as the relative positions of the Sun, Moon, zodiacal constellations, and sometimes major planets. Definition ...

, also sometimes distinguished as a horologium * Horologium Augusti, a solar marker built in ancient Rome by Augustus, once believed to have acted as a sundial * Horologium, a

turret clock A turret clock or tower clock is a clock designed to be mounted high in the wall of a building, usually in a clock tower, in public buildings such as Church (building), churches, university buildings, and town halls. As a public amenity to enab ...

built in 1283 in Dunstable, UK * ("Clock of Wisdom"), a 14th-century book on spirituality by Henry Suso * , a 17th-century book by Christiaan Huygens on pendulum clocks *

Horologium (constellation) Horologium (Latin , the pendulum clock, from Ancient Greek, Greek , ) is a constellation of six stars faintly visible in the southern celestial hemisphere. It was first described by the French astronomer Nicolas-Louis de Lacaille in 1756 and vis ...

, in the southern celestial hemisphere named in honor of Huygens's work *

Horologium-Reticulum Supercluster The Horologium-Reticulum Supercluster, is a massive supercluster spanning around 550 million light-years. It has a mass of around 1017 Solar mass, solar masses, similar to that of the Laniakea Supercluster, which houses the Milky Way. It is center ...

, in the area of the constellation * Horologium (Orthodoxy), or Horologion, the book detailing the prayers at the canonical hours in Eastern Orthodoxy

See also