time dilation

Definitions

1. 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.
   countable, uncountable
2. The perceived change in the speed of time experienced due to psychological stress, hormones, or drugs; the rate of time perception, chronoception.
   countable, uncountable

Equivalents

CEFR level