mel·io·rate (mēl'yə-rāt', mē'lē-ə-) v.
mel·io·rat·ed, mel·io·rat·ing, mel·io·rates
v.
tr. To make better; improve. v.
intr. To grow better.
[Latin meliōrāre, meliōrāt-, from melior, better; see mel-2 in Indo-European roots.] mel'io·ra·ble (-rə-bəl) adj., mel'io·ra'tive adj. & n., mel'io·ra'tor n.