- Brown dwarf
- Galactic coordinate
- Guanine
- Configuration
- Fetus
- Radioactivity
- Hall effect
- Switching
- Electronegativity
- Genetics
- Geostationary transfer orbit
- Mesoglea
- St Lucie cherry
- Flat truss
- Decryption
- Clap
- Urban heat island
- Proton
- Xbox 360
- LPG
- Juvenile water
- Sea ice - Grey
- Adenine
- Convection
- Computer
- Magnetic disk
- Specific impulse
- IEC
- Jarosite
- Keplerian orbit