Timespaces

Timespaces is a term encountered primarily in informal discussions, science fiction, and some interdisciplinary writing to refer to the fusion or interaction of time and space. It is often used to describe either the concept of spacetime in physics or speculative ideas about multiple temporal-spatial frameworks. In formal physics, the standard term is spacetime, a four-dimensional continuum combining three spatial dimensions with time, whose geometric structure is governed by the theory of relativity.

Although timespace and spacetime are sometimes used interchangeably in popular writing to stress that time cannot be separated from space, timespace is not widely used in technical literature. The mathematical treatment, spacetime as a differentiable manifold endowed with a metric, underpins causal structure, gravitational time dilation, and light-cone geometry.

In fiction and philosophy, "timespaces" may denote branching timelines, time travel, or navigable temporal dimensions that interact with spatial contexts. Such usage explores questions of causality, identity, and narrative form rather than empirical science.

In summary, timespaces is a flexible term that spans physics, philosophy, and fiction, but in scientific practice the established term is spacetime. See also spacetime, relativity, time, and multiverse.