1. the act or state of abating or the state of being abated; reduction; decrease; alleviation; mitigation.
  2. suppression or termination: abatement of a nuisance; noise abatement.
  3. an amount deducted or subtracted, as from the usual price or the full tax.
  4. Law.
    1. a reduction of a tax assessment.
    2. the termination of a nuisance.
    3. a wrongful entry on land made by a stranger, after the owner’s death and before the owner’s heir or devisee has obtained possession.
    4. a decrease in the legacies of a will when the assets of an estate are insufficient to pay all general legacies in full.
  5. Also called rebatement. Heraldry. a charge or mark that, when introduced into a coat of arms, indicates the owner’s disgrace.


  1. diminution or alleviation; decrease
  2. suppression or terminationthe abatement of a nuisance
  3. the amount by which something is reduced, such as the cost of an article
  4. property law a decrease in the payment to creditors or legatees when the assets of the debtor or estate are insufficient to meet all payments in full
  5. property law (formerly) a wrongful entry on land by a stranger who takes possession after the death of the owner and before the heir has entered into possession

mid-14c., from Old French abatement, from abattre (see abate).

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