Define time?

Question:

Define time?

Best Answer - Chosen by Asker: "Time is a relative variable, varies from person to person and directly proportionate to the feelings".

Time is 4th dimension as well.
There are a lot of scietific definitions of time.

A system by which such intervals are measured or such numbers are reckoned

U must read this article on Wikipedia

"There are two distinct views on the meaning of time.

One view is that time is part of the fundamental structure of the universe, a dimension in which events occur in sequence, and time itself is something that can be measured. This is the realist's view, to which Sir Isaac Newton subscribed.[1]

A contrasting view is that time is part of the fundamental intellectual structure (together with space and number). In this structure, we sequence events, quantify the duration of events and the intervals between them, and compare the motions of objects. In this second view, time does not refer to any kind of entity that "flows", that objects "move through", or that is a "container" for events. This view is in the tradition of Gottfried Leibniz[2] and Immanuel Kant,[3][4] in which time, rather than being an objective thing to be measured, is part of the mental measuring system. The question, perhaps overly simplified and allowing for no middle ground, is thus: is time a "real thing" that is "all around us", or is it nothing more than a way of speaking about and measuring events?

In physics, time and space are considered fundamental (i.e. they cannot be defined in other terms). Thus the only definition possible is an operational one in which time is defined by the process of measurement and by the units chosen. Periodic events and periodic motion have long served as standards for units of time. Examples are the apparent motion of the sun across the sky, the phases of the moon, the swing of a pendulum, heartbeats, etc. Currently, the unit of time interval (the second) is defined as a certain number of hyperfine transitions in Cesium atoms (see below). All properties of time follow from this definition.

Time has long been a major subject of science, philosophy, and art. Its measurement has occupied scientists and technologists, and was a prime motivation in astronomy. Time is also of significant social importance, having economic value ("time is money") as well as personal value, due to an awareness of the limited time in each day and in human lifespans."