hydrogen
hy·dro·gen
noun \ˈhī-drə-jən\Definition of HYDROGEN
: a nonmetallic element that is the simplest and lightest of the elements and that is normally a colorless odorless highly flammable diatomic gas—symbol H; see deuterium, tritium; element table
—hy·drog·e·nous \hī-ˈdräj-ə-nəs\ adjective








