重油(じゅうゆ)

じゅうゆ
noun
heavy oil; fuel oil
1. heavy oil; fuel oil; bunker oil
A dark, viscous petroleum product used as fuel for ships, power plants, and industrial boilers. It is the residue left after lighter fractions like gasoline and diesel have been distilled from crude oil.
この船(ふね)は重油(じゅうゆ)で動(うご)く。
This ship runs on heavy oil.
重油(じゅうゆ)の価格(かかく)が上昇(じょうしょう)している。
The price of heavy oil is rising.
タンカーから重油(じゅうゆ)が流出(りゅうしゅつ)し、海(うみ)が汚染(おせん)された。
Heavy oil leaked from the tanker and the sea was contaminated.

Composed of 重(じゅう) (heavy) + 油(ゆ) (oil). Called "heavy" because it is denser and more viscous than lighter petroleum products like gasoline (揮発油(きはつゆ)) or 軽油(けいゆ) (diesel). Classified into types A, B, and C based on viscosity.

COMMON COLLOCATIONS:

  • 重油(じゅうゆ)流出(りゅうしゅつ): heavy oil spill
  • 重油(じゅうゆ)ボイラー: heavy oil boiler
  • 重油(じゅうゆ)価格(かかく): heavy oil price
  • C重油(じゅうゆ): C-grade heavy oil (the thickest type)

RELATED TERMS:

  • 軽油(けいゆ): diesel fuel (lighter grade)
  • 灯油(とうゆ): kerosene
  • 原油(げんゆ): crude oil
  • 石油(せきゆ): petroleum (general term)
general
Added 2026.4.4 1:11
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