| Dihydrogenmonoxid | dihydrogen monoxide |
| Nitrogendioxid | nitrogen dioxide |
| Kohlenmonoxid | carbon monoxide |
| Dehydrogenase | dehydrogenase |
| Argonhydrogenfluorid | argon fluorohydride |
| Hydrogen | hydrogen |
| Hydrogenase | hydrogenase |
| Hydrogencarbonat | hydrogen carbonate |
| Hydrogenkarbonat | hydrogen carbonate |
| Hydrogeochemie | hydrogeochemistry |
| Hydrogenium | hydrogen |
| Hydroxid | hydroxide |
| Drogenkonsum | consumption of drugs |
| Indogermanin | Indo-European |
| Stickstoffmonoxid | nitric oxide |
| Ethylenoxid | ethylene oxide |
| Dehydrierung | dehydration |
| Hydrochemie | hydrochemistry |
| Hydrochinon | hydroquinone |
| Hydrodynamik | hydrodynamics |