-one

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The suffix -one is used in organic chemistry to form names of organic compounds containing the -C(=O)- group: see ketone. Sometimes a number between hyphens is inserted before it to state which atom the =O atom is attached to. This suffix was extracted from the word acetone. The final "-e" disappears if it is followed by another suffix that starts with a vowel.

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v • d • e
Organic Chemistry Affixes
Carbon-based
-ane (alkane) · -ene (alkene) · -ine (unsaturated hydrocarbon) · -yne (alkyne) · alk- (saturated hydrocarbon) · ar- (aromatic)
Oxygen-based
-al (aldehyde) · -oate (ester) · -oic acid (carboxylic acid) · -ol (alcohol) · -one (ketone) · -ose (sugar)
Nitrogen-based
-ine (alkaloid) · aza- (N replaces C)
Sulfur-based
thio- (extra S)
Other
-ase (enzyme)  · -yl (radical) · nor- (no residues)
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