cash equivalent
US /kæʃ ɪˈkwɪv.əl.ənt/
UK /kæʃ ɪˈkwɪv.əl.ənt/

1.
highly liquid investments that can be readily converted into cash, typically with a maturity of 90 days or less
:
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Short-term government bonds are considered cash equivalents.
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The company's balance sheet showed a significant amount of cash equivalents.