inflation
US /ɪnˈfleɪ.ʃən/
UK /ɪnˈfleɪ.ʃən/

1.
a general increase in prices and fall in the purchasing value of money
:
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The country is experiencing high inflation.
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Controlling inflation is a key goal for the central bank.
2.
the action of inflating something or the state of being inflated
:
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The rapid inflation of the balloon caused it to burst.
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The doctor noted some inflation in the patient's knee.