potassium permanganate


: a dark purple salt KMnO4 used as an oxidizer and disinfectant

Example Sentences

Recent Examples on the Web Pingpong-like balls filled with potassium permanganate and injected with glycol are dropped from the air. Matt Wyatt, ExpressNews.com, 7 Jan. 2021 Each of the one-inch spheres, called Dragon Eggs, contains potassium permanganate, and just before they are released they are given a pin injection of anti-freeze. David Helvarg, National Geographic, 16 Oct. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'potassium permanganate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1866, in the meaning defined above

Time Traveler
The first known use of potassium permanganate was in 1866

Dictionary Entries Near potassium permanganate

Cite this Entry

“Potassium permanganate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/potassium%20permanganate. Accessed 27 Nov. 2022.

Kids Definition

potassium permanganate


: a dark purple salt used especially as a disinfectant

Medical Definition

potassium permanganate


: a dark purple salt KMnO4 used chiefly as an oxidizing agent and disinfectant

More from Merriam-Webster on potassium permanganate

Love words? Need even more definitions?

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

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Spell It

Hear a word and type it out. How many can you get right?

Universal Daily Crossword

A daily challenge for crossword fanatics.