Meaning & use
monatomic
Consisting of a single atom, used especially to describe a molecule or gas.
See it in a sentence
Helium and neon are monatomic gases, unlike oxygen, which exists as two-atom molecules.
The chemist explained why noble gases tend to remain monatomic under normal conditions.
A note on using this word
Monatomic is a specialized chemistry term, most often used when contrasting noble gases with diatomic gases like oxygen or nitrogen.
Words with a similar meaning
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Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Words with an opposite meaning
diatomicpolyatomic
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