脱氢 tuōqīng dehydrogenation Definitions Defs Origin Strokes Stroke Words Sentences Sents 脱 脫 tuō verbadjective to remove to extract or eliminate a substance (e.g. dehydration, degreasing)氢 氫 qīng noun hydrogen the chemical element hydrogen, a colorless, odorless, and tasteless gas that is the lightest of all known substances; usually referred to as 氢气 qīngqì