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/æmp/ · am·p
noun
  1. Short form of ampere, a unit of electric current. The amp of electricity flowing through the wire was measured at 5 amperes.
  2. Short form of amplifier, an electronic device that increases the power of a signal. The amp in the music system was turned up to maximum volume.
  3. Short form of ampoule, a small glass container for holding a liquid or powder. The amp of perfume was carefully opened and the contents poured into a new container.
verb
  1. To amplify, usually with 'up', to increase the power or volume of something. He asked the disk jockey to amp it up.
  2. To excite, usually with 'up', to stir up emotions or enthusiasm. The crowd was amped up for the concert.
  3. To intensify or increase, usually with 'up', to make something stronger or more powerful. The company amp up their sales efforts to meet the quarterly target.
Did you know? The term 'amp up' originated in the music industry, where it was used to describe the process of increasing the volume or power of a sound system.
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Jul 21, 2026