| AIME | Average Indexed Monthly Earnings |
| AIYE | Average Indexed Yearly Earnings |
| COLA | Cost-of-Living Adjustment |
| CPI | Consumer Price Index |
| CSRS | Civil Service Retirement System |
| FERS | Federal Employees Retirement System |
| GIC | Guaranteed Investment Contract |
| IRA | Individual Retirement Arrangement |
| MRA | Minimum Retirement Age |
| OASDI | Old Age, Survivors, and Disability Insurance |
| PIA | Primary Insurance Amount |
| TSP | Thrift Savings Plan |
| WEP | Windfall Elimination Provision |
Updated 14 May 1998