Other forms: space-times
Space-time is the four dimensions of space and time taken together. Curved space-time.
Einstein's insight was that they cannot be separated, since motion changes both. Gravity in that picture is not a force at all but a bend in space-time that things follow.
1nounspace-timeThe four dimensions of space and time taken together.
“Mass bends space-time and everything else follows the bend.”
space-time is a framework.
German
Raumzeit
English
spacetime
English, today
space-time
spacetime comes from space + time, as a German Raumzeit, introduced in this sense by Hermann Minkowski. First appears in print c. 1893 in the Philosophical Review.
Etymology from Wiktionary, CC BY-SA