upgrade

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up|grade (upgrades upgrading upgraded)
The verb is pronounced /ʌpgr'eɪd/ The noun is pronounced /'ʌpgreɪd/
1 [VERB] usu passive, be V-ed, V-ed, also V
If equipment or services are upgraded, they are improved or made more efficient.
Helicopters have been upgraded and modernized...
...upgraded catering facilities.
[N-COUNT] usu pl
Upgrade is also a noun.
...equipment which needs expensive upgrades.
...upgrades in the level of security.
2 [VERB] usu passive, be V-ed to n
If someone is upgraded, their job or status is changed so that they become more important or receive more money.
He was upgraded to security guard.
= promote
≠ downgrade
3 [VERB] V, also V n
If you upgrade or are upgraded, you change something such as your air ticket or your hotel room to one that is more expensive.
You can upgrade from self-catering accommodation to a hotel.

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