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 (mēl′yə-rāt′, mē′lē-ə-)
v. mel·io·rat·ed, mel·io·rat·ing, mel·io·rates
To make better; improve.
To grow better.

[Latin meliōrāre, meliōrāt-, from melior, better; see mel- in Indo-European roots.]

mel′io·ra·ble (-rə-bəl) adj.
mel′io·ra′tive adj. & n.
mel′io·ra′tor n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
"The greatest meliorator of the world is selfish, huckstering Trade."
The neighbor, Vasily Fomich, who happened to be there on the occasion of the national holiday, Meliorator Day, asked Matthew: "Neighbor, let me pet your jewcupine." Vasily Fomich came up with "jewcupine" because of the typewriter's keys, sticking out like porcupine's quills.