of or relating to a class of vegetable oils, such as olive oil, the molecules of which have long chains of carbon atoms containing only one double bond
See also polyunsaturated
monounsaturated in American English
(ˌmɑnoʊʌnˈsætʃəˌreɪtɪd)
adjective
designating or of an organic compound, esp. an oil or fatty acid, having only one double bond