Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A term used to distinguish a direction of time within a four-dimensional relativistic view of the cosmos.
  • noun The subjective feeling of movement from past to future.
  • noun Entropy.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Reported coined in 1927.

Examples

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