| Hydrogencarbonat | hydrogen carbonate |
| Hydrogenkarbonat | hydrogen carbonate |
| Hydrogenase | hydrogenase |
| Natriumhydrogencarbonat | sodium bicarbonate sodium hydrogen carbonate |
| Natriumcarbonat | sodium carbonate |
| Hydrochinon | hydroquinone |
| Hydrogen | hydrogen |
| Hydrogeochemie | hydrogeochemistry |
| Natriumhydrogenkarbonat | sodium bicarbonate |
| Hydrogenium | hydrogen |
| Drogenkartell | drug cartel |
| Regenmonat | Pluviôse |
| Bicarbonat | bicarbonate |
| Calciumcarbonat | calcium carbonate |
| Kaliumcarbonat | potassium carbonate |
| Natriumbicarbonat | sodium bicarbonate |
| Natriumkarbonat | sodium carbonate |
| Polykarbonat | polycarbonate |
| Dehydrogenase | dehydrogenase |
| Hydrocephalus | hydrocephalus |