Chronometry, the measurement of time, has always been an essential aspect of human civilization, and the word itself is quite unique. But, if you're looking for alternative terms, there are many synonyms for 'chronometry.' One such term is 'horology,' which deals with the science and art of time measurement, including the design, construction, and operation of timepieces. Another synonym is 'chronology,' which refers to the study of historical events' order and time. 'Timekeeping' is also used interchangeably with chronometry, as it refers to the recording of time intervals and the measurement of timekeeping devices' accuracy. 'Temporal measurement' and 'chronometrical studies' are a couple of other synonyms for chronometry.