UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/əˈbeɪtmənt/US:USA pronunciation: respellingUSA pronunciation: respelling(ə bātmənt)

WordReference Random House Unabridged Dictionary of American English © 2020
a•bate•ment  (ə bātmənt),USA pronunciation n. 
  1. the act or state of abating or the state of being abated;
  2. suppression or termination:abatement of a nuisance; noise abatement.
  3. Businessan amount deducted or subtracted, as from the usual price or the full tax.
  4. Law
    • a reduction of a tax assessment.
    • the termination of a nuisance.
    • 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.
    • a decrease in the legacies of a will when the assets of an estate are insufficient to pay all general legacies in full.
  5. HeraldryAlso called  rebatement. a charge or mark that, when introduced into a coat of arms, indicates the owner's disgrace.
  • Middle French; see abate, -ment
  • Middle English 1300–50
    • 1.See corresponding entry in Unabridged . lessening, letup, diminution.
    • 2.See corresponding entry in Unabridged . end, cessation.
    • 1.See corresponding entry in Unabridged . intensification, increase.

Collins Concise English Dictionary © HarperCollins Publishers::
aˈbatement /əˈbeɪtmənt/ n
  1. diminution or alleviation; decrease
  2. suppression or termination: the abatement of a nuisance
  3. the amount by which something is reduced, such as the cost of an article
  4. 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. (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
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