time dilation

• time dilatation (rare)

time dilation (countable and uncountable, plural time dilations)

1. (relativity) The slowing of the passage of time experienced by objects in motion relative to an observer (measurable only at relativistic speeds), or due to being in a gravitational well.
2. (psychology) The perceived change in the speed of time experienced due to psychological stress, hormones, or drugs; the rate of time perception.

• kappa effect
• Lorentz factor
• slowing-down time
• special relativity

• delimitation