Webster’s Revised Unabridged Dictionary · 1913
Step-up
Step′-up′, a. (Elec.) Transforming or converting a low-pressure current into one of high pressure; as, a step-up transformer.
Webster’s Revised Unabridged Dictionary · 1913
Step′-up′, a. (Elec.) Transforming or converting a low-pressure current into one of high pressure; as, a step-up transformer.