arrow of time

English

Alternative forms

• time's arrow

Etymology

Reported coined in 1927.

Noun

arrow of time (plural arrows of time)

1. (physics) The direction of time within a four-dimensional relativistic view of the cosmos.
2. (philosophy) The subjective feeling of movement from past to future.
3. Entropy.

Translations

direction of time in 4D

• Portuguese: seta do tempo f
• (deprecated template usage) {{trans-mid}}
• Romanian: săgeata timpului