c.1300, avauncement, "a raising to a higher rank," from Old French avancement "advancement, profit, advance payment," from avancer (see advance (v.)). Of money, from 1640s.
advancement ad·vance·ment (ād-vāns'mənt)
n.
A surgical procedure in which a tendinous insertion or a skin flap is severed from its attachment and is sutured to a further point on the body.