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.

step function

noun

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

Word History and Origins

Origin of step function¹

First recorded in 1925–30

Example Sentences

Unfortunately, it only takes one divorce-related or estate sale to shift expectations lower in a step function.

From The Daily Beast