v.
Pronunciation: h ī - ' drä-j ə - ˌ n ā t, ' h ī -dr ə -
Function: transitive verb
Inflected Form: -nat · ed ; -nat · ing
Date: 1809
: to combine or treat with or expose to hydrogen especially : to add hydrogen to the molecule of (an unsaturated organic compound)
– hy · dro · ge · na · tion \ h ī - ˌ drä-j ə - ' n ā -sh ə n, ˌ h ī -dr ə - \ noun