step-up

Definitions

General English

  • phrasal verb
    (written as step up)
    to walk

    onto

    something

    higher
  • phrasal verb
    (written as step up)
    to

    increase

    the quantity of

    something

Electronics

  • To increase in precise steps. Also, pertaining to that which increases in precise steps.
  • To increase a

    voltage

    . Also, pertaining to that which increases a voltage, such as a step-up transformer.

Military

  • noun
    (written as Step Up)
    a small

    headquarters

    party, which moves forward in advance of the main party to

    set up

    a new headquarters location; once Step Up is established, the old headquarters hands over control of the

    battle

    and moves forward to join it
http://www.dictionarycentral.com/definition/step-up.html