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
Recent Examples on the Web
Avoid harsh chemicals like bleach, ammonia or glass cleaner.
—
Kurt Knutsson, FOXNews.com, 30 May 2025
Tips For Using Bleach The Centers for Disease Control warns consumers of important safety tips when using bleach to clean or sanitize:
Bleach should never be mixed with ammonia or other cleaners.
—Kait Hanson, Southern Living, 26 May 2025
Even after the penguins migrated from the area, the ammonia concentration was still more than 100 times higher than the baseline, as the penguin guano left at the colony site continued to emit the gas.
—Doyle Rice, USA Today, 24 May 2025
However, compost can start to smell like rotten eggs, ammonia, or worse if the composting process goes awry or the compost pile has become imbalanced in some way.
—Lauren Landers, Better Homes & Gardens, 23 May 2025
See All Example Sentences for ammonia
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Kurt Knutsson, FOXNews.com, 30 May 2025
Tips For Using Bleach The Centers for Disease Control warns consumers of important safety tips when using bleach to clean or sanitize:
Bleach should never be mixed with ammonia or other cleaners.
—Kait Hanson, Southern Living, 26 May 2025
Even after the penguins migrated from the area, the ammonia concentration was still more than 100 times higher than the baseline, as the penguin guano left at the colony site continued to emit the gas.
—Doyle Rice, USA Today, 24 May 2025
However, compost can start to smell like rotten eggs, ammonia, or worse if the composting process goes awry or the compost pile has become imbalanced in some way.
—Lauren Landers, Better Homes & Gardens, 23 May 2025
See All Example Sentences for ammonia
Cite this Entry
“Ammonia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ammonia. Accessed 6 Jun. 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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