Sta·tion·a·ry a.
 1. Not moving; not appearing to move; stable; fixed.
    Charles Wesley, who is a more stationary man, does not believe the story.   --Southey.
 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. (a) A steam engine that is permanently placed, in distinction from a portable engine, locomotive, marine engine, etc. Specifically: (b) A factory engine, in distinction from a blowing, pumping, or other kind of engine which is also permanently placed.