Horologium

Look up horologium in Wiktionary, the free dictionary.

Horologium may refer to:

In horology (the science of time-keeping):

• Various types of ancient and medieval clocks, such as:
  • Sundial; notably, the Solarium Augusti, a sun marker built by Augustus
  • Hourglass
  • Water clock
  • Turret clock
  • A combination of the aforementioned, like the Tower of the Winds
• Old astronomical clocks; notably, the Antikythera mechanism
• Book of hours or horologion, manuscripts containing a daily schedule of prayers

In astronomy:

• Horologium (constellation)
• Horologium Supercluster