IPA: //ˌkrɒnəˈmɛtrɪkəl//
KK: /kronəˈmɛtrɪkəl/
Relating to the measurement of time or the use of a device that measures time accurately.
The chronometrical data collected during the experiment helped us understand the timing of the reactions.
Chronometrical → It is formed from "chrono-" (from Greek "chronos", meaning time) and "metron" (from Greek, meaning measure). The word "chronometrical" refers to the measurement of time.
Think of 'chrono-' meaning time and 'metron' meaning measure — this helps you remember that chronometrical relates to measuring time.