Definition of hydrogenated adjective from the Oxford Advanced American Dictionary

 

hydrogenated

 adjective
adjective
NAmE//haɪˈdrɑdʒəˌneɪt̮əd//
 
, NAmE//ˈhaɪdrədʒəˌneɪt̮əd//
 
(chemistry)
 
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hydrogenated oils have had hydrogen added to them
See the Oxford Advanced Learner's Dictionary entry: hydrogenated