hexamethonium

noun

hexa·​me·​tho·​ni·​um ˌhek-sə-mə-ˈthō-nē-əm How to pronounce hexamethonium (audio)
: either of two compounds C12H30Br2N2 or C12H30Cl2N2 used as ganglionic blocking agents in the treatment of hypertension

Word History

Etymology

hexa- + meth- + -onium

First Known Use

1949, in the meaning defined above

Time Traveler
The first known use of hexamethonium was in 1949

Dictionary Entries Near hexamethonium

hexameter

hexamethonium

hexamethyl

See More Nearby Entries 

Cite this Entry

“Hexamethonium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hexamethonium. Accessed 23 Apr. 2024.

Copy Citation

Share

Medical Definition

hexamethonium

noun
hexa·​me·​tho·​ni·​um ˌhek-sə-mə-ˈthō-nē-əm How to pronounce hexamethonium (audio)
: either of two compounds C12H30Br2N2 or C12H30Cl2N2 used as ganglionic blocking agents in the treatment of hypertension

More from Merriam-Webster on hexamethonium

Britannica.com: Encyclopedia article about hexamethonium

Love words? Need even more definitions?

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

Popular in Grammar & Usage

See All

Commonly Misspelled Words

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)

Absent Letters That Are Heard Anyway

How to Use Accents and Diacritical Marks

On 'Biweekly' and 'Bimonthly'
See All

Popular in Wordplay

See All

The Words of the Week - Apr. 19

10 Words from Taylor Swift Songs (Merriam's Version)

A Great Big List of Bread Words

9 Superb Owl Words

10 Words for Lesser-Known Games and Sports
See All

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Word Game You can make only 12 words. Pick the best ones!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
Missing Letter A crossword with a twist
winning words from the national spelling bee logo
Spelling Bee Quiz Can you outdo past winners of the National Spelli...