sort by Rank | Alpha
| Possible Meanings | Rank |
| Presidential Commission on Education Reform | ** |
| Peripheral Clock Enable Register | ** |
| Portage County Environmental Roundtable | ** |
| Presidential Commission for Education Reform | ** |
| Patrick Center for Environmental Research | * |
| Patrol Craft Escort Rescue | * |
| Philippine Commission on Educational Reforms | * |
| Polar Curve Estimated Rules | * |