Okla. Admin. Code § 455:10-11-3
In addition to words and terms defined in the Merit System of Personnel Administration Rules, the following words and terms shall have the following meaning unless the text clearly indicates otherwise.
"Discharge" means the act of terminating the employment relationship of a permanent classified employee who did not voluntarily resign or otherwise forfeit his or her position according to any other statutory provision. Discharge does not include separation due to reduction-in-force.
"Discipline" means informal or formal action to correct infractions of statute, rule, policy, practice or procedure regarding work performance or behavior.
"Involuntary Demotion" means the involuntary removal of a permanent employee in permanent status in a job family level to another job family level assigned a lower pay band [74:840-4.3(B)].
Okla. Admin. Code § 455:10-11-3