- Hydroelectricity
- Time stamping
- Hash function
- Biopiracy
- Holothurian
- Mesohaline water
- Nucleotide
- Antibodies
- Rafter
- Ecosystem
- Three Mile Island nuclear accident
- ECS
- ADSL
- Webcam
- CD-V
- Meteorite
- Buddleja davidii
- X9.17
- Hydroxyl radical
- Aplysia
- Fluorescein
- Filtrate
- Nephelene-syenite
- Dermatome
- Bioluminescence
- Haemolysis
- Quartz
- Data network
- ODA
- Calcium sulphate