Horologium

//hɔɹəˈloʊd͡ʒiəm// name, noun

Definitions

Proper Noun
  1. 1
    Synonym of Tower of the Winds, a monument in ancient Athens that included a clepsydra and multiple prominent sundials. historical
  2. 2
    Synonym of Solarium, a monument in ancient Rome whose obelisk was once believed to have acted as a sundial gnomon. historical
  3. 3
    A constellation of the southern sky, said to resemble a pendulum clock. It lies between the constellations Fornax and Dorado.
  4. 4
    Alternative letter-case form of horologium, the book of hours in the Eastern Orthodox and Catholic churches. alt-of
Noun
  1. 1
    Synonym of chronometer or clock, a timekeeping device. archaic, historical
  2. 2
    Synonym of astronomical clock. uncommon
  3. 3
    Synonym of horologion, the book of hours in Eastern Orthodoxy and Catholicism.

Etymology

Etymology 1

See horologium. As a location in Rome, a clipping of Latin Hōrologium Augustī (“Sundial of Augustus”). As a constellation, a clipping of Latin Hōrologium Oscillitorium (“Pendulum Clock”), coined in 1763 by the French astronomer De Lacaille to honor the Dutch astronomer and mathematician Christian Huygens, who had written a major work by that name.

Etymology 2

From Latin horologium, from Ancient Greek ὡρολόγιον (hōrológion). In reference to Eastern Orthodoxy, via its Byzantine Greek development. See menologium. Doublet of horologe.

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