The Collaborative International Dictionary
Meliority
Meliority \Mel*ior"i*ty\, n. [LL. melioritas, fr. L. melior. See
Meliorate.]
The state or quality of being better; melioration. [Obs.]
--Bacon.
Wiktionary
meliority
n. (context obsolete English) The state or quality of being better; melioration.