(mathematics, physics) Not time-dependent; not determined by the value of a variable representing time.

the present time

(ergodic theory) The average (if it exists) of a function over iterations of T, a measure-preserving transformation on a measure space, starting from some initial point x.

(mathematics, physics) Determined by the value of a variable representing time.

(computing) The stage during which a program is executing. / (computing) The amount of time during which a program is executing.

A delay used to separate the occurrence of two events, especially in a mechanical or electronic device.

(Britain) daylight saving time

To require a comparatively long period of time. / To volunteer to spend one's time (for a purpose or beneficiary).

The difference between one measurement of time and another; the length of a time interval. / The difference in clock time between two or more different time zones.

A period of time with fixed, well-defined limits.