To make or become better; improve. See Synonyms at improve.(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "ameliorate" in a sentence
"Can activity ameliorate its slow advance - and maintain vocabulary retrieval skills, so that the word "ameliorate" leaps to mind when needed?"
"The question for me is: will the execution of Hussein ameliorate or worsen the situation in Iraq in the short term and in the long run?"
"First World Series manager to ever use the word "ameliorate" in a press conference."