- Phase transition
- Taxon
- Photon
- Ethylene
- Usenet
- Empirical formula
- Photoperiod
- ANSI
- Cathode
- Ileum
- iPhone
- Game management
- Anatidae
- Constellation of Leo
- LISA
- Low consumption home
- Internal ear
- Ozonator
- Stratiform
- Frenulum
- Milky Way
- Deletion
- Dolby
- Asian black bear
- MediaFLO
- Proton-proton chain
- Shiga toxin
- WAKE
- Altostratus cloud
- Boreal forest