'horology' originates from Greek, specifically the word 'hōrologia,' where 'hōra' meant 'hour' and 'logos' meant 'study.'

'hōrologia' transformed into the Latin word 'horologia,' and eventually became the modern English word 'horology' through Middle English.

Initially, it meant 'the study of hours,' but over time it evolved into its current meaning of 'the science of time measurement.'