Word parts

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power + house

Pronunciation

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Singular
powerhouse

Plural
powerhouses

  1. (countable) A powerhouse is a person or organization with a lot of influence.
    She is a powerhouse of Canadian politics.
  2. (countable) A powerhouse is someone with a lot of strength or energy.
    Look at that guy go. What a powerhouse!
  3. (countable) A powerhouse is the source of power, energy, or strength.
    Mitochondria is the powerhouse of the cell.
  4. (countable) A powerhouse is the building housing a power station.