The period of time during which something continues

The property of enduring or continuing in time

Continuance in time

In music, duration is an amount of time or how long or short a note, phrase, section, or composition lasts.

In finance, the duration of a financial asset that consists of fixed cash flows, such as a bond, is the weighted average of the times until those fixed cash flows are received.

Duration is a theory of time and consciousness posited by the French philosopher Henri Bergson.

Length of time of an event or process; quality of an event or process with beginning and end

Quẻ Lôi Phong Hằng, đồ hình:|||:: còn gọi là quẻ Hằng, là quẻ thứ 32 trong Kinh Dịch.

Selection, training, cohesion and psychosocial adaptation influence performance and, as such, are relevant factors to consider while preparing for costly, long-duration spaceflight missions in which the performance objectives will be demanding, endurance will be tested and success will be critical.

Duration of a project's terminal element is the number of calendar periods it takes from the time the execution of element starts to the moment it is completed.