space-time

noun
\ˈspās-ˈtīm, ˈspās-ˌtīm\

Definition of space-time 

1 : a system of one temporal and three spatial coordinates by which any physical object or event can be located

called also space-time continuum

2 : the whole or a portion of physical reality determinable by a usually four-dimensional coordinate system also : the properties characteristic of such an order

First Known Use of space-time

1910, in the meaning defined at sense 1

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The first known use of space-time was in 1910

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