| Acronym | Meaning |
| AOA | Angle Of Attack [propulsion] |
| AOT60 | Accumulated Ozone Exposure Above A Threshold Value Of 60 Ppb |
| SCTA | Sample Controlled Thermal Analysis |
| EPTOX | Extraction Procedure Toxicity Test |
| NOET | NASA Operational Environment Team |
| EFPD | Effective Full Power Day |
| LMIS | Liquid Metal Ion Source |
| FMEA | Failure Mode And Effect Analysis |
| IPIRDW | Independent-process (and) Isolated-resonance (approxn. Using) Distorted Waves |
| ACCCI | American Coke And Coal Chemicals Institute |