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1 - hydrogenation definition - chemistry - about.com

Hydrogenation definition, as used in chemistry, chemical engineering, and physics.
http://chemistry.about.com/od/chemistryglossary/a/hydrogenation.htm

2 - hydrogenation definition - chemistry - about.com

Hy`dro`gen`a´tion. n. 1. (Chem.) The act of combining with hydrogen, or the state of being so combined. Thesaurus Legend: Synonyms Related Words Antonyms ...
http://chemistry.about.com/od/chemistryglossary/a/hydrogenation.htm

3 - hydrogenation - definition of hydrogenation by the free online ...

Hydrogenation ? to treat with hydrogen ? is a chemical reaction between molecular ..... The 1960s witnessed the development of well defined homogeneous ...
http://www.thefreedictionary.com/Hydrogenation

4 - hydrogenation - definition of hydrogenation by the free online ...

L'hydrogénation est une réaction chimique qui consiste en l'addition d'une molécule de dihydrogène (H2). Cette réaction est habituellement employée pour  ...
http://www.thefreedictionary.com/Hydrogenation