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Webster 1913 Edition

Noun.

[L.

decem

ten +

-yl

(Chem.)

A hydrocarbon radical,

C10H21.

, never existing alone, but regarded as the characteristic constituent of a number of compounds of the paraffin series.

decyl ‎(plural decyls)

(organic chemistry) Either of very many isomeric univalent hydrocarbon radicals, C₁₀H₂₁, formally derived from decane by the loss of a hydrogen atom

Hyphenation: de‧cyl

From dec- +‎ -yl.

decyl n ‎(uncountable)