noun
- Plural of oleum; a fuming liquid consisting of sulfuric acid with dissolved sulfur trioxide, used in chemical manufacturing and as a strong oxidizing agent.
Usage: technical; chemistry
Examples
- The laboratory stored oleums in specialized glass containers to prevent corrosion.
- Oleums are highly reactive and must be handled with extreme care by trained chemists.
- The production of certain dyes requires the use of oleums as a catalyst.
- Safety protocols mandate that oleums be kept away from water and organic materials.