picojoule

P3I1C3O1J8O1U1L1E1

noun

One million millionth ( 10⁻¹² ) of a joule. Symbol: pJ.

OriginEnglish joule ← Spanish pico ← Old Spanish bico →
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Meanings

nounpicojoule (plural picojoules)

plural picojoules · alternative pico-joule

  1. One million millionth ( 10⁻¹² ) of a joule. Symbol: pJ.

Origin

  1. Latinbeccus
  2. Old Spanishbico
  3. Spanishpico
  4. Englishpico-
  5. Englishjoule
  6. Englishpicojoule

From pico- + joule.

Full word history & related roots →
Cite this entry
APA

picojoule. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/picojoule

MLA

“picojoule.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/picojoule. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “picojoule,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/picojoule.

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