hydrogen atom

Thesaurus

Noun

1.

hydrogen atom - an atom of hydrogen hydrogen ion - a positively charged atom of hydrogen; that is to say, a normal hydrogen atomic nucleusatom - (physics and chemistry) the smallest component of an element having the chemical properties of the elementacid hydrogen, acidic hydrogen - a hydrogen atom in an acid that forms a positive ion when the acid dissociatesdeuterium, heavy hydrogen - an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)