- Event horizon
- Age Of Empires
- Mastectomy
- Perching
- Crossover
- Smooth muscle
- Orthosilicate
- Transposition cipher
- Spar
- SELL
- Internet Storm Center
- Bhopal disaster
- Septicaemic plague
- Electroweak theory
- Semelparity
- Floating screed
- Late Heavy Bombardment
- Cévenol episode
- Chelonians
- Zooxanthella
- Petrified
- HELIOS
- RSPB
- Contraceptive vaginal ring
- Videotex
- Truncation
- Urate
- Landslide
- Seismic hazard
- Poisson ratio