- CA
- Bald cypress
- Biogas
- Oocyte
- Catarrh
- Offspring
- Tidal range
- Oncogene
- Asymptotic giant branch
- Rhyolite
- Schrödinger's cat
- Ocean thermal energy
- Turgidity
- Audiotex
- Amphidromic point
- London plane tree
- Hypothalamus
- Ion
- Standard model
- Ice
- Oligocene
- Ikeya-Seki comet
- Ion channels
- Hominid
- Cryogenian
- Quantum computer
- Osmosis
- West's comet
- Weevil
- Unbundling