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Webster 1913 Edition

Noun.

[

Cinnamic

-yl

(Chem.)

The hypothetical radical,

(C6H5.C2H2)2C

, of cinnamic compounds.

[Formerly written also

cinnamule

cinnamyl ‎(plural cinnamyls)

(organic chemistry, especially in combination) The univalent radical C₆H₅-CH=CH- characteristic of cinnamic compounds