to make better; to improve; to grow better ...1598 rare
from Latin melior (better) + -ize
FIRST DOCUMENTED USE
1598 - see EXAMPLE below
"...I onlye desire this one thinge of them, that they woulde vouchsafe to meliorize the same, as I certaynlye knowe they well can, and doe not retayne their owne commodity therof..."
From: The Frenche Chirurgerye; or, All the Manualle Operations of Chirurgerye, with divers, & sundrye Figures, and amongst the rest, certayne nuefownde Instrumentes, verye necessarye to all the operations of Chirurgerye
- Jacques Guillemeau
Translated by A.M.