| BC | Bond coat |
| CEMI | Correlative environment material interactions (see Sections 3 and 7 in [6]) |
| CC | Complex concentrated (also compositionally complex) |
| DS | Directional solidification |
| EC | Environmental coating |
| ESSERE | Entanglement, synergy and self-regulation (see Sections 3 and 7 in [6]) |
| ETS | Evolution through survival (see Section 7 in [6]) |
| HE | High entropy |
| HPT | High-pressure turbine |
| HTM | High temperature material |
| IRIS | Interwoven risk (see Sections 3 and 7 in [6]) |
| ME | Metalloid element |
| NICE | Niobium intermetallic composite elaboration |
| RM | Refractory metal |
| RMIC | Refractory metal intermetallic composite |
| RHEA | Refractory metal high entropy alloy |
| RCCA | Refractory metal complex concentrated alloy |
| RMIC/RHEA | RMIC that also meets the definition of RHEA |
| RMIC/RCCA | RMIC that also meets the definition of RHEA |
| RHEA/RMIC | RHEA that is also a RMIC |
| RCCA/RMIC | RCCA that is also a RMIC |
| RM(Nb)IC | Refractory metal intermetallic composite based on Nb |
| RM(Nb)IC/RCCA | RM(Nb)IC that also meets the definition of RCCA |
| RM(Nb)IC/RHEA | RM(Nb)IC that also meets the definition of RHEA |
| RHEA/RM(Nb)IC | RHEA that is also a RM(Nb)IC |
| RCCA/RM(Nb)IC | RCCA that is also a RM(Nb)IC |
| SM | Simple metal |
| SX | Single crystal |
| TC | Top coat |
| TET | Turbine entry temperature |
| TGO | Thermally grown oxide |
| TM | Transition metal |
| UHTM | Ultra-high-temperature material |