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periodic function

[peer-ee-od-ik, peer-]
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noun Mathematics.
  1. a function of a real or complex variable that is periodic.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for periodic function

periodic function

noun
  1. maths a function, such as sin x, whose value is repeated at constant intervals
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012