Definition of power-up in English:

power-up

Syllabification: pow·er-up

noun

  • 1The action of switching on an electrical device, especially a computer.
    More example sentences
    • This self-calibration under power-up conditions keeps the performance optimised over the life of the sensor.
    • The controlled power up helps prevent supply glitches during power-up and also prevents excessive dissipation.
    • In the past, the operating system only had to search for the various devices connected to it on power-up, and once seen, the device would never go away.
  • 1.1(In a computer game) a bonus that a player can collect and that gives their character an advantage, such as more strength or firepower.
    More example sentences
    • To this end, the game features special bonuses and power-ups for advanced players to explore.
    • To help keep these assaults from getting out of hand there are a couple of very handy dandy power-ups that players can collect in their travels through the levels.
    • There will be plenty of bonuses and power-ups to collect on the way.

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Pronunciation: kəːf
noun
a slit made by cutting with a saw