Found 2 items, similar to step-up.
English → English (WordNet) Definition: step-up step-up n : the act of increasing something; “he gave me an increase in salary” [syn: increase] [ant: decrease]
English → English (gcide) Definition: Step-up Step-up \Step"-up`\, a. (Elec.) Transforming or converting a low-voltage current into one of high voltage; as, a step-up transformer. [Webster 1913 Suppl.]