The definition of hydrogen is a gaseous element that has no color or odor and is flammable.
An example of hydrogen is one of the elements in water.
See hydrogen in Webster's New World College Dictionary
Origin: Fr hydrogène (see hydro- & -gen): coined (1787) by L. B. Guyton de Morveau (1737-1816), Fr chemist, in reference to the generation of water from the combustion of hydrogen
See hydrogen in American Heritage Dictionary 4
noun Symbol H
Origin: French hydrogène
Origin: : Greek hudro-, hydro-
Origin: + French -gène, -gen.
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