[hawr-uh-loh-jee-uh m, hor-]

noun, plural hor·o·lo·gi·a [hawr-uh-loh-jee-uh, hor-] /ˌhɔr əˈloʊ dʒi ə, ˌhɒr-/.

a building supporting or containing a timepiece, as a clock tower.
(initial capital letter) Astronomy. the Clock, a small southern constellation between Eridanus and Dorado.

Origin of horologium

1655–65; < Latin < Greek hōrológion, equivalent to hōrológ(os) timeteller (hōro-, combining form of hṓra hour + -log-, variant stem of légein to speak, tell + -os adj. suffix) + -ion diminutive suffix
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Historical Examples of horologium

British Dictionary definitions for horologium


noun plural -gia (-dʒɪə)

a clocktower
Also called: horologion (in the Eastern Church) a liturgical book of the offices for the canonical hours, corresponding to the Western breviary

Word Origin for horologium

C17: from Latin; see horologe


noun Latin genitive Horologii (ˌhɒrəˈləʊdʒɪaɪ)

a faint constellation in the S hemisphere lying near Eridanus and Hydrus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012