the act of improving something (especially machinery) by raising it to a higher grade (as by adding or replacing components); "the power plant received a new upgrade"
hardware that provides better performance than an earlier version did
the property possessed by a slope or surface that rises
a reservation that is improved; "I got an upgrade to first class when coach class was full"
software that provides better performance than an earlier version did
to improve what was old or outdated; "I've upgraded my computer so I can run better software"; "The company upgraded their personnel"
give better travel conditions to; "The airline upgraded me when I arrived late and Coach Class was full"
get better travel conditions; "I upgraded to First Class when Coach Class was overbooked"
make payment to; compensate; "My efforts were not remunerated"
make amends for; pay compensation for; "One can never fully repair the suffering and losses of the Jews in the Third Reich"; "She was compensated for the loss of her arm in the accident"
adjust for; "engineers will work to correct the effects or air resistance"
make a counterattack and return like for like, especially evil for evil; "The Empire strikes back"; "The Giants struck back and won the opener"; "The Israeli army retaliated for the Hamas bombing"
underestimate the real value or ability of; "Don't sell your students short--they are just shy and don't show off their knowledge"
sell securities or commodities or foreign currency that is not actually owned by the seller, who hopes to cover (buy back) the sold items at a lower price and thus to earn a profit