oleum

noun

ole·​um ˈō-lē-əm How to pronounce oleum (audio)
1
plural olea ˈō-lē-ə How to pronounce oleum (audio) : oil
2
plural oleums : a heavy oily strongly corrosive solution of sulfur trioxide in anhydrous sulfuric acid

Word History

Etymology

Latin, olive oil — more at oil

First Known Use

circa 1823, in the meaning defined at sense 1

Time Traveler
The first known use of oleum was circa 1823

Dictionary Entries Near oleum

Olethreutidae

oleum

O level

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Cite this Entry

“Oleum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oleum. Accessed 28 Nov. 2024.

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Medical Definition

oleum

noun
ole·​um ˈō-lē-əm How to pronounce oleum (audio)
plural olea -lē-ə How to pronounce oleum (audio)
: oil sense 1
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