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step-
step aerobics
step aside
step change
step dance
step deal
step down
step-down
step function
step in
step-in
step-in binding
step machine
step on
step out
step payment lease
step stool
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step function
step func·tion (plural step func·tions)


noun 
Definition:
 
mathematical function: a mathematical function, e.g. a waveform, that remains constant in value over a given interval but changes abruptly in value from one interval to the next
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