quaternary ammonium compound

noun

Definition of quaternary ammonium compound

: any of numerous strong bases and their salts derived from ammonium by replacement of the hydrogen atoms with organic radicals and important especially as surface-active agents, disinfectants, and drugs

Examples of quaternary ammonium compound in a Sentence

Recent Examples on the Web The Environmental Working Group’s senior research and database analyst Samara Geller told Apartment Therapy that dryer sheets contain a potentially harmful chemical called quaternary ammonium compounds (QACS). Megan Schaltegger, House Beautiful, "Here’s Why You Need to Stop Using Dryer Sheets ASAP," 30 Apr. 2019

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

First Known Use of quaternary ammonium compound

circa 1934, in the meaning defined above

Keep scrolling for more

Learn More about quaternary ammonium compound

Time Traveler for quaternary ammonium compound

Time Traveler

The first known use of quaternary ammonium compound was circa 1934

See more words from the same year

Statistics for quaternary ammonium compound

Cite this Entry

“Quaternary ammonium compound.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quaternary%20ammonium%20compound. Accessed 2 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Keep scrolling for more

More Definitions for quaternary ammonium compound

quaternary ammonium compound

noun

Medical Definition of quaternary ammonium compound

: any of numerous strong bases and their salts derived from ammonium by replacement of the hydrogen atoms with organic radicals and important especially as surface-active agents, disinfectants, and drugs

called also quat, quaternary

More from Merriam-Webster on quaternary ammonium compound

Britannica.com: Encyclopedia article about quaternary ammonium compound

Comments on quaternary ammonium compound

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

WORD OF THE DAY

Test Your Vocabulary

February 2021 Words of the Day Quiz

  • squirrel in winter
  • Which is a synonym of perdure?
True or False

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

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

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!