pyrosulfuric acid

noun

py·​ro·​sulfuric acid

"+…-

: an unstable, crystalline acid H₂S₂O₇ that is usually handled commercially as a thick oily fuming liquid, that is formed by the union of sulfur trioxide with sulfuric acid, that is a chief component of fuming sulfuric acid, and that is converted to sulfuric acid when mixed with water

called also disulfuric acid

compare oleum

Word History

Etymology

International Scientific Vocabulary pyr- + sulfuric

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now

Rhymes for pyrosulfuric acid

• antacid
• placid