Definition of nickel hydride in US English:

nickel hydride

noun

  • An association of nickel and hydrogen (usually represented by the formula NiH₂), formed electrolytically or when hydrogen gas comes into contact with a nickel surface.

adjective

  • Designating or relating to a cell or battery having an anode of nickel hydroxide and a cathode of an intermetallic compound.

Origin

1920s; earliest use found in Chemical Abstracts.