time dilatation
or time dilation
noun
Physics.
(in relativity) the apparent loss of time of a moving clock as observed by a stationary observer.
Origin of time dilatation
First recorded in 1955–60
Words nearby time dilatation
time clock,
time code,
time constant,
time copy,
time deposit,
time dilatation,
time dilation,
time discount,
time draft,
time exposure,
time flies
British Dictionary definitions for time dilation
time dilation
time dilatation
noun
the principle predicted by relativity that time intervals between events in a system have larger values measured by an observer moving with respect to the system than those measured by an observer at rest with respect to it
Scientific definitions for time dilation
time dilation
The relativistic effect of the slowing of a clock with respect to an observer. In Special Relativity, a clock moving with respect to an observer appears to run more slowly than to an observer moving with the clock. In General Relativity, time dilation is also caused by gravity; clocks on the earth's surface, for example, run more slowly than clocks at high altitudes, where gravitational forces are weaker.
Cultural definitions for time dilation
time dilation
In physics, the apparent slowing down of moving clocks that is predicted by the special theory of relativity. Time dilation is well verified experimentally.