Noun
The act or process of freeing from hydrogen; also, the condition resulting from the removal of hydrogen.
Source: Webster's dictionarySamarium catalysts assist decomposition of plastics, dechlorination of pollutants such as polychlorinated biphenyls (PCBs), as well as the dehydration and dehydrogenation of ethanol. Source: Internet
The reaction is believed to proceed by one dehydrogenation of the alcohol to the aldehyde followed by formation of a hemiaminal and the after a second dehydrogenation to the amide. Source: Internet