a colourless slightly water-soluble liquid with a lemon-like odour, a terpene aldehyde found esp in citronella and certain eucalyptus oils: used as a flavouring and in soaps and perfumes. Formula: (CH3)2C:CH(CH2)2CH(CH3)CH2CHO
Also called: rhodinal
citronellal in American English
(ˌsɪtrəˈnɛllæl)
noun
a colorless liquid, C10H18O, with a very strong lemon odor, found in lemons and eucalyptus oil, and used in perfumes and soaps