IPA: /ˌdiːˌhaɪdrəˈdʒɛnəʃən/
KK: /diˌhɪdrəˈdʒeɪʃən/
A process in which hydrogen is removed from a chemical compound, often leading to the formation of unsaturated compounds from saturated ones.
Dehydrogenation is a key step in the production of certain types of fuels.
Dehydrogenation → It is formed from "de-" (meaning removal), "hydrogen" (from Greek "hydro" meaning water and "genes" meaning creator or producer), and "-ation" (meaning the process of). The word describes the process of removing hydrogen from a molecule.
Think of 'removing' ('de-') 'hydrogen' from a substance — that's what dehydrogenation means.