- To nullify - To render neutral; to reduce to a state of
neutrality. - To render inert or imperceptible the peculiar
affinities of, as a chemical substance; to destroy the effect of; as,
to neutralize an acid with a base. - To destroy the peculiar or opposite dispositions of;
to reduce to a state of indifference inefficience; to counteract; as,
to neutralize parties in government; to neutralize efforts, opposition,
etc.