Fixed

Fixed air — carbonic acid or carbon dioxide; -- so called by Dr. Black because it can be absorbed or fixed by strong bases. See Carbonic acid, under Carbonic.

Fixed alkali — a non-volatile base, as soda, or potash, in distinction from the volatile alkali ammonia.

Fixed ammunition — a projectile and powder inclosed together in a case ready for loading.

Fixed battery — a battery which contains heavy guns and mortars intended to remain stationary; -- distinguished from movable battery.

Fixed bodies — those which can not be volatilized or separated by a common menstruum, without great difficulty, as gold, platinum, lime, etc.

Fixed capital — See the Note under Capital, n., 4.

Fixed fact — a well established fact.

Fixed light — one which emits constant beams; -- distinguished from a flashing, revolving, or intermittent light.

Fixed oils — non-volatile, oily substances, as stearine and olein, which leave a permanent greasy stain, and which can not be distilled unchanged; -- distinguished from volatile or essential oils.

Fixed pivot — the fixed point about which any line of troops wheels.

Fixed stars — such stars as always retain nearly the same apparent position and distance with respect to each other, thus distinguished from planets and comets.