Main Entry: up·grade

Pronunciation: \ˈəp-ˌgrād, ˌəp-ˈ\

Function: transitive verb

Inflected Form(s): up·grad·ed; up·grad·ing

1 : to assign a less serious status to <upgraded the patient's condition from fair to good>
2 : to reclassify (as a cancer, concussion, or bone fracture) to a more serious grade when the grades are numbered from least to most serious