Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

pyrogallol

play
noun py·ro·gal·lol \ˌpī-rō-ˈga-ˌlȯl, -ˌlōl; -ˈgȯ-\

Definition of pyrogallol

  1. :  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)



Origin of pyrogallol

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


First Known Use: 1868


Medical Dictionary

pyrogallol

play play play
noun py·ro·gal·lol \-ˈgal-ˌȯl, -ˌōl; -ˈgȯ-ˌlȯl, -ˌlōl\

Medical Definition of pyrogallol

  1. :  a poisonous bitter crystalline phenol C6H6O3 with weak acid properties that is obtained usually by pyrolysis of gallic acid and that is used especially as a mild reducing agent (as in photographic developing) and in medicine as a topical antimicrobial (as in the treatment of psoriasis)




Learn More about pyrogallol


Seen and Heard

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

February 9, 2016

marked by high spirits and laughter

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

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

pince-nez spindrift duvet kittly-benders
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ