Definition of arrow of time or time's arrow in English:

arrow of time (or time's arrow)

  • The direction of travel from past to future in time considered as a physical dimension.
    More example sentences
    • In other words, in the microworld, there is no intrinsic arrow of time, distinguishing the future from the past.
    • In the late twentieth century, an arrow of time may have been discovered at the subatomic level.
    • There was a conference on Wheeler Feynman electrodynamics and the arrow of time, in 1963.
See parent entry: arrow

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Pronunciation: ˈmeɪlstrəm
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a powerful whirlpool in the sea