- API
- Acidic rock
- Global energy balance
- Transduction
- Session key
- Dark ages
- Asynchronous
- Androgens
- Coleoptera
- CENELEC
- Hardness of water
- Contact metamorphism
- Reverse genetics
- Biofuel
- IDS
- BSI
- Breccia
- Episiotomy
- Nanocrystal
- Katathermal
- CryoSat
- Endogamy
- Platinoids
- ISDB-T
- Neuston
- Genomics
- Bacterium
- Sleet
- Quantum cryptography
- Denial of service