Meanings
nounoleum (countable and uncountable, plural oleums)
plural oleums
- countableuncountablechemistryA solution of sulfur trioxide in sulfuric acid.
Synonyms: fuming sulfuric acid
Synonyms & antonyms
nounA solution of sulfur trioxide in sulfuric acid.
Similar
Origin
- Ancient Greekἔλαιον“olive oil”
- Latinoleum“olive oil”
- GermanOleum
- Englisholeum
From German Oleum, from Latin oleum (“olive oil”), from Ancient Greek ἔλαιον (élaion, “olive oil”). Doublet of oil.
More words from German, Latin, Ancient Greek
Full word history & related roots →Translations
Bulgarian димяща сярна киселина
- димяща сярна киселина (dimjašta sjarna kiselina)fuming sulfuric acid
Catalan òleum
- òleumfuming sulfuric acid
Chinese Mandarin 發煙硫酸 /发烟硫酸
- 發煙硫酸 /发烟硫酸 (fāyānliúsuān)fuming sulfuric acid
Finnish sumuava rikkihappo, savuava rikkihappo
- sumuava rikkihappofuming sulfuric acid
- savuava rikkihappofuming sulfuric acid
French oléum
- oléumfuming sulfuric acid
German Oleum, rauchende Schwefelsäure
- Oleumfuming sulfuric acid
- rauchende Schwefelsäurefuming sulfuric acid
Japanese 発煙硫酸
- 発煙硫酸 (hatsuenryūsan)fuming sulfuric acid
Korean 발연황산
- 발연황산 (baryeonhwangsan)fuming sulfuric acid
Russian о́леум
- о́леум (óleum)fuming sulfuric acid
Rhymes & wordplay
Anagrams
Cite this entry
APA
oleum. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/oleum
MLA
“oleum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/oleum. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “oleum,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/oleum.
Source: oleum on Wiktionary, CC BY-SA 4.0.