time-like

Causally connectable interval

Time-like describes a direction or interval in spacetime where the separation between events is dominated by time rather than space—meaning a signal or object could travel between them without exceeding the speed of light.

In physics, time-like curves represent possible paths for massive particles: The trajectory was time-like, so causality was preserved.

Contrasts with space-like, where events are too far apart for any causal connection.

relativity

Einstein

Byword for genius

relativistic · observer · clock · proper · covariant · inertial · velocity · causality · signal · faster-than-light

spacetime

interval

Duration between two points

manifold · metric · coordinate · frame · reference · simultaneity · event · separation · null · curvature

causality

causal

Producing an effect

consequence · determinism · forward · backward · arrow · ordering · before · after · influence · chain

temporal

duration

Length of existence

era · chronological · sequential · historical · periodic · cyclical · fleeting · eternal · transient · perpetual

Opposites
spacetime interval classification

time-likespace-like

Resembling outer void

null · superluminal · Euclidean

dimensional character

time-likespace-like

Resembling outer void

spatial · geometric · metric

Family

time, like, times, timed, timing, timer, timely, untimely, timeless

Familiarity
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Used worldwide · Timeless · Abstract · Rated G