Nearby Words

frequencies

[free-kwuhn-see] Origin

fre·quen·cy

[free-kwuhn-see]
noun, plural -cies.
1.
Also, fre·quence. the state or fact of being frequent; frequent occurrence: We are alarmed by the frequency of fires in the neighborhood.
2.
rate of occurrence: The doctor has increased the frequency of his visits.
3.
Physics.
a.
the number of periods or regularly occurring events of any given kind in unit of time, usually in one second.
b.
the number of cycles or completed alternations per unit time of a wave or oscillation. Symbol: F; Abbreviation: freq.
4.
Mathematics. the number of times a value recurs in a unit change of the independent variable of a given function.
5.
Statistics. the number of items occurring in a given category.


Origin:
1545–55; < Latin frequentia assembly, multitude, crowd. See frequent, -cy

non·fre·quence, noun
non·fre·quen·cy, noun
o·ver·fre·quen·cy, noun
un·der·fre·quen·cy, noun, plural -cies.


1. regularity, repetition, recurrence.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Frequencies is always a great word to know.
So is lollapalooza. Does it mean:
the offspring of a zebra and a donkey.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
Etymonline
Word Origin & History

frequency
1640s, "fact of occurring often," from L. frequentia (see frequent). Earlier it had been used in a now-bsolete sense of "state of being crowded" (mid-16c.); sense in physics, "rate of recurrence," especially of a vibration, is from 1831. In radio electronics, frequency
EXPAND
modulation (1922, abbreviated F.M.) as a system of broadcasting is distinguished from amplitude modulation (or A.M.).
COLLAPSE
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
frequency   (frē'kwən-sē)  Pronunciation Key 
  1. Physics The rate at which a repeating event occurs, such as the full cycle of a wave. Frequencies are usually measured in hertz. Compare amplitude. See also period.

  2. Mathematics The ratio of the number of occurrences of some event to the number of opportunities for its occurrence.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

frequency definition


In physics, the number of crests of a wave that move past a given point in a given unit of time. The most common unit of frequency is the hertz (Hz), corresponding to one crest per second. The frequency of a wave can be calculated by dividing the speed of the wave by the wavelength. Thus, in the electromagnetic spectrum, the wavelengths decrease as the frequencies increase, and vice versa.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
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