horological

WordReference Random House Unabridged Dictionary of American English © 2025

ho•rol•o•gy  (hô rol′ə jē, hō-), n. 

1. Time the art or science of making timepieces or of measuring time.

• Greek hōro- (combining form of hó̄ra hour) + -logy
• 1810–20

Collins Concise English Dictionary © HarperCollins Publishers::

horology / hɒˈrɒlədʒɪ/ noun

1. the art or science of making timepieces or of measuring time

horologic / ˌhɒrəˈlɒdʒɪk/, ˌhoroˈlogical adjective