Upgrade

(noun.) 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'.

(noun.) hardware that provides better performance than an earlier version did.

(noun.) the property possessed by a slope or surface that rises.

(noun.) a reservation that is improved; 'I got an upgrade to first class when coach class was full'.

(noun.) software that provides better performance than an earlier version did.

(verb.) to improve what was old or outdated; 'I've upgraded my computer so I can run better software'; 'The company upgraded their personnel'.

(verb.) give better travel conditions to; 'The airline upgraded me when I arrived late and Coach Class was full'.

(verb.) get better travel conditions; 'I upgraded to First Class when Coach Class was overbooked'.

(verb.) rate higher; raise in value or esteem.

校对:斯坦顿