petawatt

== English == === Etymology === From peta- + watt. === Noun === petawatt (plural petawatts) (metrology) 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.) Alternative form: PW (symbol) Meronyms: mW, milliwatt < W, watt < kW, kilowatt < MW, megawatt < GW, gigawatt < TW, terawatt ==== Derived terms ==== petawatt-hour