frequency(redirected from ultrasound frequency)
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fre•quen•cy(ˈfri kwən si)
n., pl. -cies.
once in a blue moon Very rarely. A blue moon occurs when there is a full moon twice in the same month, an unusual event, but one that takes place from time to time.
rare as hen’s teeth See scarce as hen’s teeth, ABSENCE.
when two Fridays come together Never. Since two Fridays never come together, this expression is usually used as a sarcastic quip when one is asked when he intends to do something of an onerous nature such as complete a project, pay back a personal loan, or the like.
|Noun||1.||frequency - the number of occurrences within a given time period; "the frequency of modulation was 40 cycles per second"; "the frequency of his seizures increased as he grew older"|
radio frequency - an electromagnetic wave frequency between audio and infrared
infrared, infrared frequency - the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; "they could sense radiation in the infrared"
wave number - the reciprocal of the wavelength of a wave
attendance - the frequency with which a person is present; "a student's attendance is an important factor in her grade"
sampling frequency - (telecommunication) the frequency of sampling a continuously varying signal
rate - a magnitude or frequency relative to a time unit; "they traveled at a rate of 55 miles per hour"; "the rate of change was faster than expected"
|2.||frequency - the ratio of the number of observations in a statistical category to the total number of observations|
ratio - the relative magnitudes of two quantities (usually expressed as a quotient)
|3.||frequency - the number of observations in a given statistical category|
this is happening with increasing frequency → esto está ocurriendo con cada vez mayor frecuencia
high/low frequency → alta/baja frecuencia
the high frequency of sth → la fréquence élevée de qch
with increasing frequency (= more and more often) → de plus en plus souvent
to increase in frequency → être de plus en plus fréquent(e)