Adelung-1793: Ohm (2), die · Ohm (1), der
Brockhaus-1911: Ohm [3] · Ohm [2] · Ohm
Herder-1854: Ohm [3] · Ohm [2] · Ohm [1]
Lueger-1904: Ohm [2] · Ohm [1]
Meyers-1905: Ohm [4] · Ohm [5] · Ohm [3] · Ohm [1] · Ohm [2]
Pierer-1857: Ohm [3] · Ohm [2] · Ohm [1]