Chronometrical is an adjective that refers to the measurement of time using a chronometer or other timekeeping device. Synonyms for this word include timekeeping, chronological, and measured. Other related synonyms might include temporal, momentary, and sequential. The word chronometrical often implies a high level of precision and accuracy when measuring time, so synonyms such as exact, calibrated, and standardized might also be appropriate. Alternatively, more casual synonyms for chronometrical might include timed, scheduled, or even clocked. Depending on the context, any of these synonyms could be used to describe the measurement or observation of time in a particular activity or field of study.