ヘリオトロピンMeanings1nounheliotropinA chemical compound (piperonal) with a vanilla-like scent, used in perfumes and flavorings. Technical term.ヘリオトロピンはバニラに似にた香かおりを持もつ化か合ごう物ぶつです。Heliotropin is a compound with a vanilla-like scent.