oleum

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Related to Fuming sulfuric acid: H2SO4

o·le·um

 (ō′lē-əm)
n. pl. o·le·a (ō′lē-ə) or o·le·ums
A corrosive fuming solution of sulfur trioxide in sulfuric acid.

[Latin, olive oil; see oil.]

oleum

(ˈəʊlɪəm)
n, pl olea (ˈəʊlɪə) or oleums
(Elements & Compounds) another name for fuming sulphuric acid
[from Latin: oil, referring to its oily consistency]
References in periodicals archive ?
3] [10, 14], hot concentrated sulfuric acid [15], and fuming sulfuric acid [13, 16, 17].
Following proper safety precautions (including a chemical lab coat/apron, safety goggles, and thick butyl gloves), pour out a small amount (10 to 15 mL) of fuming nitric acid and fuming sulfuric acid into separate labeled vials while under the fume hood.
Why does the list include fuming sulfuric acid but not sulfuric acid?