from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The property or condition of occurring at frequent intervals.
  • n. Mathematics & Physics The number of times a specified periodic phenomenon occurs within a specified interval, as:
  • n. Mathematics & Physics The number of repetitions of a complete sequence of values of a periodic function per unit variation of an independent variable.
  • n. Mathematics & Physics The number of complete cycles of a periodic process occurring per unit time.
  • n. Mathematics & Physics The number of repetitions per unit time of a complete waveform, as of an electric current.
  • n. Statistics The number of measurements in an interval of a frequency distribution.
  • n. Statistics The ratio of the number of times an event occurs in a series of trials of a chance experiment to the number of trials of the experiment performed.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The rate of occurrence of anything; the relationship between incidence and time period.
  • n. The property of occurring often rather than infrequently.
  • n. The quotient of the number of times a periodic phenomenon occurs over the time in which it occurs: .
  • n. number of times an event occurred in an experiment (absolute frequency)

from the GNU version of the Collaborative International Dictionary of English

  • n. The condition of returning frequently; occurrence often repeated; common occurence
  • n. A crowd; a throng.

from The Century Dictionary and Cyclopedia

  • n. A crowd; a throng.
  • n. The quality of being frequent; often occurrence; the happening often in the ordinary course of things.
  • n. 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.
  • n. In electricity, see alternating.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the number of occurrences within a given time period
  • n. the number of observations in a given statistical category
  • n. the ratio of the number of observations in a statistical category to the total number of observations


Latin frequentia, multitude, from frequēns, frequent-, crowded, numerous, frequent.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin frequentia, from frequens. (Wiktionary)


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