Longman Dictionary of Contemporary English homepage

Date: 1700-1800
Origin: meliorate 'to ameliorate' (16-20 centuries), from Late Latin, past participle of meliorare, from Latin melior 'better'

ameliorate

verb
     
a‧me‧li‧o‧rate [transitive]
formal to make a bad situation better or less harmful [= improve]:
It is not clear what can be done to ameliorate the situation.
amelioration noun [uncountable]

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