- upgrade (to something) the act of making a machine, computer system, etc. more powerful and efficient; the more powerful and efficient machine, computer system, etc.
- instructions for installing an upgrade to the existing system
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- the act of improving the condition of a building, etc. in order to provide a better service
- The building urgently needs an upgrade.
- the act of giving somebody a better seat on a plane, room in a hotel, etc. than the one that they paid for; the seat, room, etc. itself
- Frequent flyers qualify for a free upgrade.
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