pyrogallol

noun
py·​ro·​gal·​lol | \ ˌpī-rō-ˈga-ˌlȯl How to pronounce pyrogallol (audio) , -ˌlōl; -ˈgȯ- How to pronounce pyrogallol (audio) \

Definition of pyrogallol

: a poisonous bitter crystalline phenol C6H6O3 with weak acid properties that is usually obtained by pyrolysis of gallic acid and used especially as a mild reducing agent (as in photographic developing)

First Known Use of pyrogallol

1868, in the meaning defined above

History and Etymology for pyrogallol

International Scientific Vocabulary pyro- + gallic (acid) + -ol entry 1

Keep scrolling for more

Learn More about pyrogallol

Time Traveler for pyrogallol

Time Traveler

The first known use of pyrogallol was in 1868

See more words from the same year

Statistics for pyrogallol

Cite this Entry

“Pyrogallol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pyrogallol. Accessed 17 Jan. 2021.

Keep scrolling for more

More Definitions for pyrogallol

pyrogallol

noun
py·​ro·​gal·​lol | \ -ˈgal-ˌȯl How to pronounce pyrogallol (audio) , -ˌōl; -ˈgȯ-ˌlȯl How to pronounce pyrogallol (audio) , -ˌlōl How to pronounce pyrogallol (audio) \

Medical Definition of pyrogallol

: a poisonous crystalline phenol C6H6O3 formerly used as a topical antimicrobial (as in the treatment of psoriasis)

More from Merriam-Webster on pyrogallol

Britannica.com: Encyclopedia article about pyrogallol

Comments on pyrogallol

What made you want to look up pyrogallol? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Words of Snow and Ice Quiz

  • image1037863653
  • Which of the following refers to thin, bending ice, or to the act of running over such ice?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!