olefinic

Adjective

 * 1) Characteristic of, or containing olefins.
 * Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich
 * Using adamantylidenylfulvene, a similar adduct, was obtained where the adamantyl group is positioned rigidly onto the molecular framework by virtue of the olefinic linkage originating from the fulvene.

Etymology
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