acetyltannic acid

noun

ace·​tyl·​tan·​nic acid

ə-ˌsē-tᵊl-ˈta-nik-

: a yellowish white or grayish white powder obtained by the acetylation of tannin and used as an intestinal astringent

Word History

Etymology

acetyl + tannic

First Known Use

1875, in the meaning defined above

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