noun Download 🔗Share A monoterpene hydrocarbon 1-methyl-4-prop-1-en-2-yl-cyclohexene found in the essential oils of oranges, lemons and similar fruit, and mainly responsible for their fragrance Examples : "The pleasant, citrusy smell that fills the air when you peel an orange is largely due to the presence of limonene in the rind. " compound substance chemistry fruit plant Chat with AIVocabulary GamePractice Reading