- Numbering plan
- Sub-critical reactor
- Contraception
- Objective
- Quartz
- Lagrangian point L2
- Logical channel
- The Bohr atom
- SKMP
- Twilight
- Kimberlite
- Maltose
- Stalactite form
- iTunes
- H.323
- Omnivore
- STU-III
- Polling
- Haemoglobin
- Bethe cycle
- Stardust
- Optical doublet
- Salt gland
- Fertility
- Substitution
- Western red cedar
- UAC
- Emission spectrum
- LINAC
- Coordination number