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O____
Definitions
A solution of sulfur trioxide in sulfuric acid.
Word origin
From German Oleum, from Latin oleum (“olive oil”), from Ancient Greek ἔλαιον (élaion, “olive oil”). Doublet of oil.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
No curated clues for oleum yet.