- Proof of Concept
- Semi-permeable membrane
- Surgery
- Sea ice - First year average
- Aminoglycoside
- Songbird
- Fischer-Tropsch process
- Supernova remnants
- Boson
- Phases of a planet
- Wigner effect
- M20
- Plasma
- Tidal bore
- Retinoid
- Tectrix
- Coelom
- Hamiltonian
- Sika deer
- Lewis base
- CTP
- Gateway
- Magnetosphere
- VASIMR
- Agro-forestry-hunting balance
- HomeRF
- IPSec
- Syrinx
- Microclimate
- WEEE