- Ocean thermal energy
- Aquifer
- Solar Impulse
- Extinction
- DID
- DVD
- GPU
- Public domain software
- Flattening
- Service tree
- Facet
- Avascular
- Acetylation
- Baryon
- IAM
- Anion
- Crystal symmetry
- Demersal
- Tidal Gate
- CGS system
- DHCP
- Feral
- Crystal chemistry
- Luyten, Willem
- Patella
- Concomitant
- Chitin
- Leucitite
- Oxygen
- Pathological