dictionary.pt
hydrogen
nounmasculinetechnicalcommon/idɾuˈʒɛnju/hi·dro·gé·ni·o
Definition
1A colorless, odorless, highly flammable gaseous chemical element (symbol H, atomic number 1), the lightest and most abundant in the universe.
Usage examples
“Hydrogen is used as a rocket fuel.”
“Water is composed of hydrogen and oxygen.”
Common combinations
hydrogen atomhydrogen bombhydrogen fuel cellhydrogen bond