1
: a pungent colorless gaseous alkaline compound of nitrogen and hydrogen NH3 that is very soluble in water and can easily be condensed to a liquid by cold and pressure
2
Examples of ammonia in a Sentence
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Green Molecules Will Emerge as the Building Blocks of the Future
In 2025, investments in green molecule production, including green hydrogen, methanol, ammonia, and synthetic fuels, will grow significantly, driven by policy support and private funding.
—
Sarwant Singh, Forbes, 22 Jan. 2025
Pet-Safe Ways to Clean Your Home Humans know not to lick or sniff bleach or ammonia, for example.
—Nafeesah Allen, Better Homes & Gardens, 9 Jan. 2025
Greene recommends avoiding chemicals with high pH levels, like bleach and ammonia.
—Heather Bien, Southern Living, 28 Dec. 2024
If water remains stagnant in a reservoir, there is a risk that chloramine, the chemical used as a disinfectant, will break down and chlorine will evaporate, leaving behind ammonia that could foster bacterial growth in the water supply.
—Matt Hamilton, Los Angeles Times, 10 Jan. 2025
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Sarwant Singh, Forbes, 22 Jan. 2025
Pet-Safe Ways to Clean Your Home Humans know not to lick or sniff bleach or ammonia, for example.
—Nafeesah Allen, Better Homes & Gardens, 9 Jan. 2025
Greene recommends avoiding chemicals with high pH levels, like bleach and ammonia.
—Heather Bien, Southern Living, 28 Dec. 2024
If water remains stagnant in a reservoir, there is a risk that chloramine, the chemical used as a disinfectant, will break down and chlorine will evaporate, leaving behind ammonia that could foster bacterial growth in the water supply.
—Matt Hamilton, Los Angeles Times, 10 Jan. 2025
See all Example Sentences for ammonia
Dictionary Entries Near ammonia
Cite this Entry
“Ammonia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ammonia. Accessed 29 Jan. 2025.
Copy CitationKids Definition
ammonia
noun
am·mo·nia
ə-ˈmō-nyə 
1
: a colorless gas that is a compound of nitrogen and hydrogen, has a sharp smell and taste, is easily dissolved in water, can easily be made a liquid by cold and pressure, is used to make ice, fertilizers, and explosives, and is the chief nitrogen-containing waste product of many organisms that live in water
2
: a solution of ammonia in water
ammoniacal
adjective
ˌam-ə-ˈnī-ə-kəl
Etymology
from Latin sal ammoniacus "ammonium chloride," literally "salt of Ammon," named for the Egyptian god Ammon near whose temple the salt was extracted
Medical Definition
ammonia
noun
am·mo·nia
ə-ˈmō-nyə
1
: a pungent colorless gaseous alkaline compound of nitrogen and hydrogen NH3 that is very soluble in water and can easily be condensed to a liquid by cold and pressure
2
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