Step-up

a.

1.

(Elec.) Transforming or converting a low-voltage current into one of high voltage; as, a step-up transformer.

Noun

1.

step-up - the act of increasing something; "he gave me an increase in salary" Synonyms: increase

accrual, accruement, accumulation, addition, advance, aggrandisement, aggrandizement, amplification, appreciation, augmentation, change of magnitude, elevation, enlargement, escalate, escalation, exaggeration, expanding upon, expansion, inclusion, increase, intensification, intensify, maximation, maximisation, maximization, rise, split, split up, step up, stock split, strengthening, surge, upsurge