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An organic acid radical: carbonyl.
[French -yle, from Greek hūlē, wood, matter.]
(Chemistry) (in chemistry) indicating a group or radical: methyl; carbonyl.
[from Greek hulē wood, matter]
a suffix used in the names of chemical groups: ethyl.
[< French -yle < Greek hylē matter, wood, substance]
A suffix used to form the chemical names of organic compounds when they are radicals (parts of larger compounds), such as ethyl and phenyl.