Definition:Stationary

Definition
A body is stationary if its velocity (in a given frame of reference) is zero.

Also known as
A stationary body can also be described as at rest.

The term motionless can also be used, as can still and non-moving. Note that still has many other meanings, so probably best not used in this context to save confusion.

Some authors, when introducing this concept, limit the frame of reference to the surface of Earth.