- hydrophilous
- hydrophobia
- hydrophobic
- hydrophone
- hydrophyte
- hydrophytes
- hydroplane
- hydroponics
- hydropower
- hydroquinone
- hydros
- hydroscope
- hydroscopical
- hydrosol
- hydrospace
- hydrosphere
- hydrostatic
- hydrostatical
- hydrostatics
- hydrosulfate
- hydrosulfide
- hydrosulfite
- hydrosulfurous acid
- hydrotaxis
- hydrotherapeutics