step function From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounA function from the real line to a finite subset of the real line. Related wordsSynonymsset functionpartial functionreal functionsimple functionpoint functioncomplex functionsigmoid functionspecial functionchoice functionintervalsingle-valued functionmeasurable functionsubpowerinclusion functionrecursive functionsegment References Wiktionary — step function Wikipedia — step function