| Hitzewelle | heatwave hot spell heat wave |
| Mittelwelle | Medium frequency |
| Hitzewallung | hot flush |
| Hitzemesser | pyrometer |
| Katzenwelpe | kitten |
| Hundewelpe | puppy |
| Kältewelle | cold snap |
| Lichtwelle | light wave |
| Riesenwelle | rogue wave |
| Stehwelle | standing wave |
| Tonwelle | capstan |
| Kurzwelle | shortwave |
| Mikrowelle | microwave microwave oven |
| Eizelle | ovum egg cell |
| Mizelle | micelle micella |
| Zitadelle | citadel |
| Hitlersee | Szczedrzyk |
| Hitzeindex | heat index |
| Hitze | heat |
| Hitzemonat | Thermidor |