| Hydrometer | hydrometer |
| Hygrometer | hygrometer |
| Gyrometer | gyrometer |
| Pyrometer | pyrometer |
| Hodometer | odometer |
| Barometer | barometer |
| Mikrometer | micrometre micrometer |
| Odometer | odometer |
| Eudiometer | eudiometer |
| Hektometer | hectometer hectometre |
| Heliometer | heliometer |
| Radiometer | radiometer |
| Xylometer | xylometer |
| Hydrogen | hydrogen |
| Hydrokultur | hydroponics |
| hydrieren | hydrogenate |
| Hydrologe | hydrologist |
| Hydrolyse | hydrolysis |
| Dromedar | dromedary Arabian camel |
| Prompter | teleprompter |