upgrade
Concise Oxford English Dictionary © 2008 Oxford University Press:
upgrade/ʌpˈɡreɪd/
▶verb raise to a higher standard or rank. ▶noun an act of upgrading or an upgraded version.
– phrases
on the upgrade improving.
on the upgrade improving.
– derivatives
upgradeability (also upgradability) noun,
upgradeable (also upgradable) adjective,
upgrader noun.
upgradeability (also upgradability) noun,
upgradeable (also upgradable) adjective,
upgrader noun.
'upgrade' also found in these Oxford entries:

