hydrogenation

from WordNet (r) 3.0 (2006)

hydrogenation
    n 1: a chemical process that adds hydrogen atoms to an
         unsaturated oil; "food producers use hydrogenation to keep
         fat from becoming rancid"

from The Collaborative International Dictionary of English v.0.48

Hydrogenation \Hy`dro*gen*a"tion\, n. (Chem.)
   The act of combining with hydrogen, or the state of being so
   combined.
   [1913 Webster]

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