26984 words

atoms

2 definitions • 2 examples
1
the smallest unit of any chemical element, consisting of a positive nucleus surrounded by negative electrons. Atoms can combine to form a molecule:

Examples:

A molecule of carbon dioxide (CO2) has one carbon atom and two oxygen atoms.
figurative He hasn't an atom of sense (= he has no sense), that boy.
2
the smallest unit of any chemical element, consisting of a positive nucleus surrounded by negative electrons. Atoms can combine to form a molecule.

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