• WordNet 3.6
    • n frequency the number of observations in a given statistical category
    • n frequency the ratio of the number of observations in a statistical category to the total number of observations
    • n 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"
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: Cows are able to hear lower and higher frequencies better than human beings
    • Frequency A crowd; a throng.
    • Frequency The condition of returning frequently; occurrence often repeated; common occurence; as, the frequency of crimes; the frequency of miracles. "The reasons that moved her to remove were, because Rome was a place of riot and luxury, her soul being almost stifled with, the frequencies of ladies' visits."
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Scientists have discovered that the mating call of the Mediterranean fruit fly has exactly the same frequency as lower F# on a harmonica.
    • n frequency A crowd; a throng.
    • n frequency The quality of being frequent; often occurrence; the happening often in the ordinary course of things.
    • n frequency The ratio of the number of times that an event occurs in the ordinary course of events to the number of occasions on which it might occur; with a few recent writers on physics, the number of regularly recurring events of any given kind in a given time.
    • n frequency In electricity, see alternating.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: The low frequency call of the humpback whale is the loudest noise made by a living creature. The call of the humpback whale is louder than Concorde and can be heard from 500 miles away.
    • Frequency repeated occurrence of anything
    • ***


Webster's Revised Unabridged Dictionary
L. frequentia, numerous attendance, multitude: cf. F. fréquence,. See Frequent
Chambers's Twentieth Century Dictionary
L. frequens, frequentis; cog. with farcīre, to stuff.


In literature:

Shortly after sundown, said the news report, a call had come through on a military short wave frequency.
"Operation Terror" by William Fitzgerald Jenkins
Considering the extraordinary frequency of localised forms of surgical tuberculosis, general dissemination of the disease is rare.
"Manual of Surgery" by Alexis Thomson and Alexander Miles
They then radiated a signal at this frequency, modulated at the frequency to which the local oscillator was set.
"Tom Swift and The Visitor from Planet X" by Victor Appleton
All the lookouts were doubled and changed with unusual frequency.
"Young Peoples' History of the War with Spain" by Prescott Holmes
On the other hand, god M appears with special frequency in the Madrid manuscript, which treats of this deity with great fullness of detail.
"Representation of Deities of the Maya Manuscripts" by Paul Schellhas
"The House Fly and How to Suppress It" by L. O. Howard and F. C. Bishopp
The long vowel sounds come next in frequency.
"How to Teach Phonics" by Lida M. Williams
Each of the Earth groups had its own frequency, and so did the Martians and Jovians.
"Rip Foster in Ride the Gray Planet" by Harold Leland Goodwin
He deplored the frequency of its operations in New Mexico, and emphatically declared his intention of stamping it out.
"Emerson's Wife and Other Western Stories" by Florence Finch Kelly
This will depend a good deal on the frequency of relapses after the active secondary stage.
"The Third Great Plague" by John H. Stokes

In poetry:

'Tis found on the heaven-hallow'd day of repose—
Blest haven of rest from our toils and our woes!—
That voice of the drunkard, the oath, curse, and brawl,
Are sounds of such frequence, they cease to appal.
"The Plague of Our Isle" by Janet Hamilton

In news:

Richard Carter/Special to the Times Record News Instrumental outfit Broadcasting on All Frequencies has played such venues as the Iron Horse Pub and Fuzzy's Taco Shop.
It exhibits insertion loss of 3.5 dB across the full frequency range, with isolation of 15 dB between ports.
It offers at least 20 dB isolation over that frequency range with maximum insertion loss of 0.5 dB.
When journalists describe Jane Seymour as the queen of the mini-series, as they do with increasing frequency these days, her agent gets worried.
Two school districts in our area are tracking students using ID badges and radio frequency technology, but not all parents think it's such a good idea.
The Census Bureau is considering trying out Radio Frequency Identification technology to keep track of hundreds of thousands of computers and other items in a pilot project, the bureau announced.
Their latest, The Frequency of Death.
This simple yet elegant solution to achieving good electrical and ground connections in miniature high-frequency components clears the way for lead-free package processing.
A series of low- leakage -level limiters from Herotek includes models with frequency coverage from 10 MHz to 1 GHz, 100 MHz to 2 GHz, and 2 to 18 GHz.
The model LM-2G8G-13-5W-SFF limiter from Planar Monolithics Industries provides that type of protection over a broad frequency range from 2 to 8 GHz.
Neurotoxin -producing algae can increase the amount of harmful toxins in the shellfish that California residents consume — ramping up in frequency and severity locally.
The Low Observable Antenna from Spectrum Advanced Specialty Products has a scalable frequency range of 136 to 915 MHz.
Fork- oil change frequency as a line item has long been missing in manufacturers documentation, and no one really knows why.
The frequency of adverse events related to the IT injection of steroids is low, with pain, short-lasting vertigo, otitis media, and tympanic perforations being the most common complications.
New Phase II study shows monthly ACZ885 reduced attack frequency by >= 50% and normalized inflammation markers in Familial Mediterranean Fever patients.

In science:

We therefore obtain algorithm that produces detailed analysis of phase space in terms of periodic sets resonating with a single frequency: by using more frequencies we extend the method to full phase space frequency analysis.
Ergodic Theory and Visualization II: Visualization of Resonances and Periodic Sets
For a given turbulence profile, the unseen frequencies only depend on the GS positions: the more distant the GSs, the smaller the spatial frequencies affected, the larger the number of unseen frequencies in a given frequency range of interest.
Tomographic reconstruction for Wide Field Adaptive Optics systems: Fourier domain analysis and fundamental limitations
In such a situation all the unseen frequencies are canceled by the neutral frequencies: an unseen frequency has no effect on the image quality in the GS directions.
Tomographic reconstruction for Wide Field Adaptive Optics systems: Fourier domain analysis and fundamental limitations
For the frequencies that correspond to well-seen frequencies for the model, the direct invert of the interaction matrix is performed, whereas these frequencies could correspond to badly seen modes in the real geometry.
Tomographic reconstruction for Wide Field Adaptive Optics systems: Fourier domain analysis and fundamental limitations
Since in period search with the periodogram we study a range of frequencies, we are also interested in the significa nce of one peak compared to the peaks at other frequencies rather than the significance of a single frequency.
The generalised Lomb-Scargle periodogram. A new formalism for the floating-mean and Keplerian periodograms