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

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

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.

At each occasion that. / (informal, idiomatic) Used to express a strong preference for one thing over another.

During sequentially discrete instances.

Simultaneously. / On the other hand (introducing an opposing viewpoint).

(mathematics, physics) The set of values, representing time, over which a function dependent on time is defined.

A numeric code generated at regular intervals by a timing system.

(television, radio) The block of programming on television during the middle of the evening, usually between 7:00 pm and 11:00 pm. / The busiest or most important period.