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Definitions of upgrade from WordNet
1
upgrade (n.)
an upward slope or grade (as in a road);
upgrade (n.)
software that provides better performance than an earlier version did;
upgrade (n.)
a reservation that is improved;
I got an upgrade to first class when coach class was full
upgrade (n.)
the property possessed by a slope or surface that rises;
upgrade (n.)
hardware that provides better performance than an earlier version did;
upgrade (n.)
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
2
upgrade (v.)
rate higher; raise in value or esteem;
upgrade (v.)
to improve what was old or outdated;
The company upgraded their personnel
I've upgraded my computer so I can run better software
upgrade (v.)
give a promotion to or assign to a higher position;
upgrade (v.)
get better travel conditions;
I upgraded to First Class when Coach Class was overbooked
upgrade (v.)
give better travel conditions to;
The airline upgraded me when I arrived late and Coach Class was full
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