To render neutral; reduce to a state of neutrality between different parties Or opinions.In chem., to destroy or render inert or imperceptible the peculiar properties of, by chemical combination. See neutralization, 1.To render inoperative; invalidate; nullify; counterbalance: as, to neutralize opposition.Also spelled neutralise.In motor-racing, to give a neutral character to (a town or to a specified part of a road), that is, to arrange that the time used in passing through or over it is not to be counted in the race.