Abatement

421-a tax abatement, property tax exemption in the U.S. state of New York
Abatement ab initio, a legal doctrine that, if the accused dies before appeals are exhausted, the conviction gets vacated
Abatement of debts and legacies, a common law doctrine of wills
Abatement in pleading, a legal defense to civil and criminal actions
Abatement (heraldry), a modification of the shield or coat of arms imposed by authority for misconduct
Asbestos abatement, removal of asbestos from structures
Bird abatement, driving or removing undesired birds from an area
Dust abatement, the process of inhibiting the creation of excess soil dust
Graffiti abatement, a joint effort between groups to eliminate graffiti
Marginal abatement cost, the marginal cost of reducing pollution
Noise abatement, strategies to reduce noise pollution or its impact
Nuisance abatement, regulatory compliance methodology
Tax abatement, temporary reduction or elimination of a tax