pe·​ri·​od·​ic·​i·​ty | \ ˌpir-ē-ə-ˈdi-sə-tē How to pronounce periodicity (audio) \

Definition of periodicity

: the quality, state, or fact of being regularly recurrent or having periods

Examples of periodicity in a Sentence

Recent Examples on the Web Eventually, however, a light intensity pattern would spontaneously emerge with a starkly different periodicity set by the solitons parading through the cavity. Karmela Padavic-callaghan, Scientific American, 9 Mar. 2022 In either case, the laser or the thread helps crystals form, but their periodicity, their patterning, is fully their own. Karmela Padavic-callaghan, Scientific American, 9 Mar. 2022 There are no steady beats, though various kinds of periodicity come into play, including a rat-a-tat flapping noise that Fure elicits by holding a piece of paper over an upturned subwoofer. Alex Ross, The New Yorker, 6 Dec. 2021 But those hypotheses all assume that grid cells map landscapes with perfect periodicity, Ulanovsky notes. Quanta Magazine, 14 Oct. 2021 Researchers had seen, for instance, that changing the geometry of a room could push and pull at the hexagonal grids, distorting their activity and rigid periodicity. Quanta Magazine, 14 Oct. 2021 But those models don’t predict the breakdown of periodicity in three dimensions. Quanta Magazine, 14 Oct. 2021 This periodicity affords money a whiff of certainty—a sense that wealth and poverty are, like the positions of the planets, subject to a set of objective and universal truths. Charles Duhigg, The New Yorker, 31 May 2021 His idea was that perturbations in the star’s motions across our line of sight that would reveal some sort of periodicity indicative of a planet. Bruce Dorminey, Forbes, 19 May 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'periodicity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of periodicity

1820, in the meaning defined above

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Time Traveler for periodicity

Time Traveler

The first known use of periodicity was in 1820

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Dictionary Entries Near periodicity

periodic function


periodic key

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Statistics for periodicity

Last Updated

27 Mar 2022

Cite this Entry

“Periodicity.” Dictionary, Merriam-Webster, Accessed 20 May. 2022.

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More Definitions for periodicity


pe·​ri·​od·​ic·​i·​ty | \ ˌpir-ē-ə-ˈdis-ət-ē How to pronounce periodicity (audio) \
plural periodicities

Medical Definition of periodicity

: the quality, state, or fact of being regularly recurrent or having periods the periodicity of peptic ulcer is … characteristic of the diseaseJournal of the American Medical Association

More from Merriam-Webster on periodicity Encyclopedia article about periodicity


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