5 C.F.R. § 430.402
In this subpart-
Appraisal system means the policies, practices, and procedures an agency establishes under 5 U.S.C. chapter 43 and 5 CFR part 430, subparts B and C, or other applicable legal authority, for planning, monitoring, developing, evaluating, and rewarding employee performance. This includes appraisal systems and appraisal programs as defined at § 430.203 and performance management systems as defined at § 430.303 .
GPRA means the Government Performance and Results Act of 1993.
OMB means the Office of Management and Budget.
OPM means the Office of Personnel Management.
Outstanding performance means performance that substantially exceeds the normally high performance expected of any senior employee, as evidenced by exceptional accomplishments or contributions to the agency's performance.
Performance evaluation means the comparison of the actual performance of senior employees against their performance expectations and may take into account their contribution to agency performance, where appropriate.
Performance expectations means critical and other performance elements and performance requirements that constitute the senior executive performance plans (as defined in § 430.303 ) established for senior executives, the performance elements and standards that constitute the performance plans (as defined in § 430.203 ) established for senior professionals, or other appropriate means authorized under performance appraisal systems not covered by 5 U.S.C. chapter 43 for communicating what a senior employee is expected to do and the manner in which he/she is expected to do it, and may include contribution to agency performance, where appropriate.
Program performance measures means results-oriented measures of performance, whether at the agency, component, or function level, which include, for example, measures under the Government Performance and Results Act.
PRB means Performance Review Board, as described at § 430.310 .
Relative performance means the performance of a senior employee with respect to the performance of other senior employees, including their contribution to agency performance, where appropriate, as determined by the application of a certified appraisal system.
Senior employee means a senior executive or a senior professional.
Senior executive means a member of the Senior Executive Service (SES) paid under 5 U.S.C. 5383 .
Senior professional means an employee in a senior-level (SL) or scientific or professional position (ST) paid under 5 U.S.C. 5376 .
5 C.F.R. §430.402