| 2D | two-dimensional |
| 3D | three-dimensional |
| ATC | air traffic control |
| ATM | air traffic management |
| DAA | detect and avoid |
| DoD | Department of Defense |
| eVTOL | electric vertical takeoff and landing |
| FAA | Federal Aviation Administration |
| NASA | National Aeronautics and Space Administration |
| OEM | original equipment manufacturers |
| UAM | urban air mobility |
| UAS | unmanned aircraft system(s) |
| UPS | United Parcel Service |
| UTM | Unmanned Aircraft System Traffic Management |