| Egologie | egology |
| Algologie | algology |
| -ologie | -ology |
| Aerologie | aerology |
| Oologie | oology |
| Sexologie | sexology |
| Ufologie | ufology |
| Apologie | apology apologia |
| Biologie | biology |
| Ethologie | ethology behavioural research |
| Geologie | geology |
| Mesologie | mesology |
| Myologie | myology |
| Noologie | noology |
| Otologie | otology |
| Pedologie | pedology |
| Senologie | senology |
| Urologie | urology |
| Zoologie | zoology |
| Ökologie | ecology |