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step function

noun Mathematics.
  1. a function that is constant on each of a finite set of subintervals of its domain, the union of the subintervals being the domain.
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Origin of step function

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for step function

step function

noun
  1. an electrical waveform that rises or falls instantly from one level to another
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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