adj.
- not moving.
- not changing in quantity or condition.
Usage
The words stationary and stationery are often confused. Stationary is an adjective which means ‘not moving or changing’, as in a car collided with a stationary vehicle, whereas stationery is a noun which means ‘writing materials’, as in I wrote to Ann on the hotel stationery.
Etymology
ME: from L. stationarius, from statio(n-) (see station).