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“chronometry”
The technique of accurately measuring time; the measurement of intervals of time: The system of chronometry proved to be excellent in Jill's watch and it kept perfect time even when she was hiking in high altitudes in the Alps!
This entry is located in the following units:
chrono-, chron-
(page 4)
meter-, metro-, metr-, -metrical, -metrically, -metron, -metric, -metrist, -meter, -meters, -metry, -metre
(page 9)