- OSD
- Optical disk
- Phase space
- Mycoplasma
- CDP
- Methylergometrine
- Primary colour
- Sewage sludge
- Mica
- Cambrian
- Salt gland
- OFDM
- Cloaca
- Resistivity
- Oxidation
- Colony
- VOC
- Arboreal
- Educational software
- Sidereal time
- Carbon dioxide
- Exif
- Sigmoidoscopy
- Fluorescein
- Die
- Slurry pipeline
- Transgenic
- Dopamine
- Mineral
- ATP