Webster dictionary was developed by Noah Webster in the beginning of 19th century. On this website, you can find definition for step up from the 1913 edition of Webster's Revised Unabridged Dictionary. Define step up using one of the most comprehensive free online dictionaries on the web.

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step up
Part of Speech: Noun
Results: 1
1. Transforming or converting a low- pressure current into one of high pressure; as, a step- up transformer.
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