This post highlights several recent terms or definitions added to the glossary above.

The *distance* is the metric of space, the shortest length between two points in space. Similarly, the *distime* is the metric of time, the shortest duration between two points in time.

A *timeline* is a linear ordering of events by *distime* from or to a reference event. A *locusline* is a linear ordering of events by distance from or to a reference event.

A *clock* shows the present instant in the local timeline. An *odologe* (o′∙do∙loje) is an app or device that shows the present point in the current *locusline*.

*Instantaneous* events occur in an instant of time. *Punctaneous* events occur in a point of space.

*Simultaneous* events occur at the same time. *Simulocus* events occur at the same place.

*Synchronous* motions are parallel in time, as in having the same period. From Greek *syn+chron+ous. **Symmacronous* motions are parallel in space, as in having the same orbit. From Greek *sym+macron+ous*.

*Pseudo-length* is measured by time and expressed as length, as with multiplying time by the free-flow speed. *Pseudo-duration* is measured by length and expressed as time, as with multiplying length by the free-flow pace.

*Inertia* (linear) is the resistance of an object to any change in its state of motion. *Facilia* (linear) is the nonresistance of a subject to a change in its state of movement.