Petawatt

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An SI unit of power equal to 10¹⁵ watts. Symbol: PW. An amount of power much larger than all the power generated by all power stations on Earth. (Consuming 1 petawatt during a duration of 1 hour would consume 1 petawatt-hour of energy.)

    "Meronyms: mW, milliwatt < W, watt < kW, kilowatt < MW, megawatt < GW, gigawatt < TW, terawatt"

Example

More examples

"Meronyms: mW, milliwatt < W, watt < kW, kilowatt < MW, megawatt < GW, gigawatt < TW, terawatt"

Etymology

From peta- + watt.

Related phrases

petawatt-hour

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.