petrolæum

A form of petroleum — A flammable liquid ranging in color from clear to very dark brown and black, consisting mainly of hydrocarbons, occurring naturally in deposits under the Earth's surface.

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Meanings

nounpetrolæum (uncountable)
  1. archaicuncountableArchaic spelling of petroleum.
    1 more example

    The foreign bituminous waters are, the Lacus Aſphaltites in Judea, a ſpring of petrolæum in the palatinate of Cracow in Poland, a ſpring of petrolæum in Tranſylvania, ſome hot ſprings of petrolæum in the kingdom of Naples, ſeveral ſprings of petrolæum in the duchy of Modena, the deſcription of which is chiefly from Rammazini.

    1758, John Rutty, “A Methodical Synopsis of Mineral Waters, comprehending the most celebrated Medicinal Waters, both cold and hot, of Great Britain, Ireland, France, Germany, and Italy, and several other parts of the world. […]”, in The Critical Review: or, Annals of Literature, volume the fourth, London: […] R[ichard] Baldwin [Junior], […], page 251
Cite this entry
APA

petrolæum. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/petrol%C3%A6um

MLA

“petrolæum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/petrol%C3%A6um. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “petrolæum,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/petrol%C3%A6um.

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