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frequency (fre´kwәn-se) the number of occurrences of a periodic or recurrent process in a unit of time. In cardiac pacing terminology, frequency is expressed by the formula: frequency = 12 × pulse width. the number of occurrences of a particular event or the number of members of a population or statistical sample falling in a particular class. relative frequency. radio frequency
the range of frequencies of electromagnetic radiation between 10 kilohertz and 100 gigahertz, used for radio communication. relative frequency
the ratio of the number of occurrences of a specified phenomenon in a population to the total size of the population. urinary frequency
urination at short intervals without increase in daily volume of urinary output, due to reduced bladder capacity or cystitis.
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