noun
: a precise method of comparing the frequencies of two periodic phenomena (as the ticking of two clocks) by observing the interval between their successive coincidences, the interval being the least common multiple of the periods compared
noun
: a precise method of comparing the frequencies of two periodic phenomena (as the ticking of two clocks) by observing the interval between their successive coincidences, the interval being the least common multiple of the periods compared
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012