ammonium
noun
am·mo·ni·um
ə-ˈmō-nē-əm 
: an ion NH4+ derived from ammonia by combination with a hydrogen ion and known in compounds (such as salts) that resemble in properties the compounds of the alkali metals
Examples of ammonium in a Sentence
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Hartford Courant There are other factors that can affect calcium uptake by the plant, such as high concentrations of ammonium, potassium, and magnesium in the soil.
—
Nora Doonan, Hartford Courant, 14 June 2025
Iran also sources critical missile-fuel chemicals—such as ammonium perchlorate—from China, importing thousands of tons in recent months.
—Amir Daftari, MSNBC Newsweek, 12 June 2025
According to The Wall Street Journal, Tehran has arranged for a shipment that includes ammonium perchlorate—used in solid-fuel ballistic missiles—which could enable the production of up to 800 missiles.
—Amir Daftari, MSNBC Newsweek, 6 June 2025
Cold perms commonly use ammonium thioglycolate and make a tighter breakdown of the bonds.
—Sable Yong, Vogue, 28 May 2025
See All Example Sentences for ammonium
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Nora Doonan, Hartford Courant, 14 June 2025
Iran also sources critical missile-fuel chemicals—such as ammonium perchlorate—from China, importing thousands of tons in recent months.
—Amir Daftari, MSNBC Newsweek, 12 June 2025
According to The Wall Street Journal, Tehran has arranged for a shipment that includes ammonium perchlorate—used in solid-fuel ballistic missiles—which could enable the production of up to 800 missiles.
—Amir Daftari, MSNBC Newsweek, 6 June 2025
Cold perms commonly use ammonium thioglycolate and make a tighter breakdown of the bonds.
—Sable Yong, Vogue, 28 May 2025
See All Example Sentences for ammonium
Cite this Entry
“Ammonium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://x0upouf933.proxynodejs.usequeue.com/dictionary/ammonium. Accessed 12 Jul. 2025.
Copy CitationKids Definition
ammonium
noun
am·mo·ni·um
ə-ˈmō-nē-əm
: an ion that comes from the combination of ammonia with a hydrogen ion
Medical Definition
ammonium
noun
am·mo·ni·um
ə-ˈmō-nē-əm
: an ion NH4+ derived from ammonia by combination with a hydrogen ion and known in organic compounds (as quaternary ammonium compounds) and in compounds (as salts) that resemble in properties the compounds of the alkali metals
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