-on

Also found in: Medical

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-on¹

suff.

a. Subatomic particle: baryon.

b. Unit; quantum: photon.

2. Basic hereditary unit: codon.

[From ion.]

-on²

suff.

Inert gas: radon.

[New Latin, from (arg)on.]

-on³

suff.

A chemical compound that is not a ketone or a compound that contains oxygen in a carbonyl group: parathion.

[Alteration of -one.]

-on

suffix forming nouns

1. (Chemistry) indicating a chemical substance interferon parathion

2. (Physics / General Physics) indicating an elementary particle or quantum electron photon

3. (Chemistry) indicating an inert gas neon radon

4. (Life Sciences & Allied Applications / Biochemistry) a molecular unit codon operon

[from ion]

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