Wiktionary
zingiberene
n. (context biochemistry English) A monocyclic sesquiterpene, the predominant constituent of the oil of ginger.
Wikipedia
Zingiberene
Zingiberene is a monocyclic sesquiterpene that is the predominant constituent of the oil of ginger (Zingiber officinale), from which it gets its name. It can contribute up to 30% of the essential oils in ginger rhizomes. This is the compound that gives ginger its distinct flavoring.