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noun B2 Upper-Intermediate Uncommon

ammonia

uh-MOH-nih-uh

Ammonia (noun) means a colorless gas made of nitrogen and hydrogen (NH3), known for its sharp, unpleasant smell. Example: “The lab filled with the sharp sting of ammonia.”

noun
1
A colorless gas made of nitrogen and hydrogen (NH3), known for its sharp, unpleasant smell.
"The lab filled with the sharp sting of ammonia."
"Ammonia is a key ingredient in many industrial fertilizers."
2
A water-based solution of this gas, commonly used as a household cleaning agent.
"She wiped down the windows with a cloth soaked in ammonia."

How to use ammonia

Learner’s notes

In plain EnglishThe strong-smelling chemical used in cleaning products and fertilizer.

Common mistake

Never mix ammonia with bleach — it creates toxic gas. Don't confuse with ammonium, which is a related but different, positively charged particle.

Easily confused with

Word forms

ammonias plural

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Test yourself on “ammonia” A quick quiz — meaning, synonyms & usage

Fill the gap

Can you complete this real example?

The lab filled with the sharp sting of _____.

Etymology

Named after the Latin sal ammoniacus, "salt of Ammon" — the substance was first collected near a temple to the Egyptian god Ammon.

Origin: Latin

spirits of hartshorn volatile alkali

Rhymes for ammonia

See all rhymes for ammonia →

Frequently asked questions

What does “ammonia” mean?

The word “ammonia” means a colorless gas made of nitrogen and hydrogen (NH3), known for its sharp, unpleasant smell. In plain terms, the strong-smelling chemical used in cleaning products and fertilizer.

How do you pronounce “ammonia”?

“Ammonia” is pronounced uh-MOH-nih-uh (/əˈmoʊn.jə/ in IPA).

How do you use “ammonia” in a sentence?

Here is “ammonia” used in a sentence: “The lab filled with the sharp sting of ammonia.”

What is another word for “ammonia”?

Words with a similar meaning to “ammonia” include spirits of hartshorn and volatile alkali.

What part of speech is “ammonia”?

“Ammonia” is a noun.

Where does the word “ammonia” come from?

The word “ammonia” comes from Latin. Named after the Latin sal ammoniacus, "salt of Ammon" — the substance was first collected near a temple to the Egyptian god Ammon.

Is “ammonia” a common word?

“Ammonia” is an uncommon word in modern English, usually learned at around the B2 level.

How many meanings does “ammonia” have?

“Ammonia” has 2 distinct senses listed in this dictionary. The most common is: a colorless gas made of nitrogen and hydrogen (NH3), known for its sharp, unpleasant smell.

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