noun. a colorless explosive liquid that is volatile and poisonous and foul-smelling.
verb. attack with a hydrogen bomb.
noun. ['ˈhaɪdrədʒən'] a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe.
noun. a chemical compound containing the azido group combined with an element or radical.