Definition of mazut in US English:

mazut

(also masut, mazout, mazute)

noun

  • In Russia: a viscous liquid left as a residue after the distillation of petroleum, used as a fuel oil and coarse lubricant.

Origin

Late 19th century; earliest use found in Chambers's Journal of Popular Literature. From Russian mazut fuel oil, perhaps from an Azerbaijani Turkish derivative ultimately of Arabic zayt oil (plural zuyūt); probably unrelated to Russian regional mazutina oily stain (Tver′ region, 1897), Russian mazat′ to oil, to smear.

Pronunciation

mazut

/məˈzuːt/