Stationary

1. Not moving; not appearing to move; stable; fixed.
2. Not improving or getting worse; not growing wiser, greater, better, more excellent, or the contrary.
3. Appearing to be at rest, because moving in the line of vision; not progressive or retrograde, as a planet.
Stationary air (Physiol.),
the air which under ordinary circumstances does not leave the lungs in respiration.
Stationary engine
1. A steam engine that is permanently placed, in distinction from a portable engine, locomotive, marine engine, etc.
2. A factory engine, in distinction from a blowing, pumping, or other kind of engine which is also permanently placed.

1. One who, or that which, is stationary, as a planet when apparently it has neither progressive nor retrograde motion.