Skip to definition.
Get the FREE one-click dictionary software for Windows.
NEW iPhone Audio English dictionary


Noun: hydrogen  hI-dru-jun
  1. A nonmetallic univalent element that is normally a colourless and odourless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
    - H, atomic number 1

Derived forms: hydrogens

See also: hydrogenate

Type of: chemical element, element, gas

Part of: H2O, water

Encyclopedia: Hydrogen

Nearest

hydroelectric
hydroelectric power
hydroelectric turbine
hydroelectricity
hydroflumethiazide
hydrofluoric acid
hydrofluorocarbon
hydrofluosilicic acid
hydrofoil
hydrogel
hydrogen
hydrogen atom
hydrogen azide
hydrogen bomb
hydrogen bond
hydrogen bromide
hydrogen carbonate
hydrogen chloride
hydrogen cyanide
hydrogen fluoride
hydrogen iodide