What does ameliorate mean?
The definition of ameliorate
A*mel”io*rate, v. t.
[imp. & p. p. Ameliorated; p. pr. & vb. n.Ameliorating.]
Etym: [L. ad + meliorare to make better: cf. F. améliorer. See Meliorate.]

To make better; to improve; to meliorate. In every human being there is a wish to ameliorate his own condition. Macaulay.

A*mel”io*rate, v. i.
To grow better; to meliorate; as, wine ameliorates by age.