Fixed

[Sarah]

Stable; non-volatile. Fixed air (Old Chem.), carbonic acid orcarbon dioxide; -- so called by Dr. Black because it can be absorbedor fixed by strong bases. See Carbonic acid, under Carbonic.-- Fixed alkali (Old Chem.), a non-volatile base, as soda, orpotash, in distinction from the volatile alkali ammonia.-- Fixed ammunition (Mil.), a projectile and powder inclosedtogether in a case ready for loading.-- Fixed battery (Mil.), a battery which contains heavy guns andmortars intended to remain stationary; -- distinguished from movablebattery.-- Fixed bodies, those which can not be volatilized or separated bya 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. [Colloq.] -- Fixed light,one which emits constant beams; -- distinguished from a flashing,revolving, or intermittent light.-- Fixed oils (Chem.), non-volatile, oily substances, as stearineand olein, which leave a permanent greasy stain, and which can not bedistilled unchanged; -- distinguished from volatile or essentialoils.-- Fixed pivot (Mil.), the fixed point about which any line oftroops wheels.-- Fixed stars (Astron.), such stars as always retain nearly thesame apparent position and distance with respect to each other, thusdistinguished from planets and comets.

[Sarah]

On a forum, it is changing what another poster said in their own quote brackets and then writing fixed below it. It started out as simply correcting another posters

[Sarah]

Neutered, castrated.

[Sarah]

When someone looks really good, you say they look fixed

[Sarah]

To become intoxicated with alcohol and/or weed.

[Sarah]

A word meaning 'to have sufficient money'

[Oralee]

Fastened securely in position.

[Kai]

[Something] that is or [will] have a certain [outcome]