Main Entry: hy·dro·ge·nate Pronunciation: hI-'dräj-&-"nAt, 'hI-dr&-j&- Function: transitive verb Inflected Forms:-nat·ed; -nat·ing : to combine or treat with or expose to hydrogen; especially: to add hydrogen to the molecule of (an unsaturated organiccompound) —hy·dro·ge·na·tion/hI-"dräj-&-'nA-sh&n, "hI-dr&-j&-/noun
hydrogenation hy·dro·gen·a·tion (hī'drə-jə-nā'shən, hī-drŏj'ə-) n. The addition of hydrogen to a compound, especially to solidify an unsaturated fat or fatty acid.