petawatt

P3E1T1A1W4A1T1T1

noun

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”

Scrabble 13
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

nounpetawatt (plural petawatts)

plural petawatts

  1. metrologyAn 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

Origin

From peta- + watt.

Full word history & related roots →
Cite this entry
APA

petawatt. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/petawatt

MLA

“petawatt.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/petawatt. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “petawatt,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/petawatt.

Source: petawatt on Wiktionary, CC BY-SA 4.0.