transitive verb-·nat·ed, -·nat·ing
transitive verbhy·dro·gen·at·ed, hy·dro·gen·at·ing, hy·dro·gen·ates
- To treat or combine chemically an unsaturated compound with hydrogen. Liquid vegetable oils are often hydrogenated to turn them into solids.
- To turn coal into oil by combining its carbon with hydrogen to form hydrocarbons.
(third-person singular simple present hydrogenates, present participle hydrogenating, simple past and past participle hydrogenated)