'Hydrogenate' definitions:

Definition of 'hydrogenate'

From: WordNet
verb
Combine or treat with or expose to hydrogen; add hydrogen to the molecule of (an unsaturated organic compound) [ant: dehydrogenate]

Definition of 'Hydrogenate'

From: GCIDE
  • Hydrogenate \Hy"dro*gen*ate\, v. t. [imp. & p. p. Hydrogenated; p. pr. & vb. n. Hydrogenating.] (Chem.) To hydrogenize. [1913 Webster]