Topic: COMPUTERS
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up‧grade
1TD [intransitive and transitive]TD to make a computer, machine, or piece of software better and able to do more things
upgrade (something) to something 
You'll need to upgrade your hard drive to 4Mb before running this software.
You'll need to upgrade your hard drive to 4Mb before running this software.2 [transitive] to improve something and make it more modern, especially in order to provide a better service : The hotel has recently been refurbished and upgraded.
The hotel has recently been refurbished and upgraded.3 [intransitive and transitive]TTA to give someone a better seat on a plane or a better room in a hotel than the one they paid for
4 [transitive]BEC to give someone a more important job
5 [transitive] to change the official description of something to make it seem better or more important [≠ downgrade]
—upgrade noun [countable]
noun [countable]