Medical Dictionary


noun hy·dro·gen \ˈhī-drə-jən\

Medical 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
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