abatement
noun
abate·ment
| \ ə-ˈbāt-mənt
\
\
Definition of abatement
1
: the act or process of reducing or otherwise abating something
abatement of pollution
: the state of being abated
a storm continuing without abatement [=without weakening]
2
: an amount abated
especially
: a deduction from the full amount of a tax
… devised tax credits, refunds, and abatements to benefit private corporations … — William Greider