| Zökostomie | caecostomy cecostomy |
| Zökotomie | cecotomy typhlotomy |
| Zäkostomie | caecostomy cecostomy |
| Zootomie | zootomy |
| Zäkotomie | cecotomy typhlotomy |
| Ökonomie | economy |
| Zyklostome | cyclostome |
| Xerostomie | xerostomia |
| Lobotomie | lobotomy leucotomy |
| Monosomie | monosomy |
| Tokologie | tocology |
| Ökologie | ecology |
| Ökonomin | economist |
| Ökostrom | clean power eco-power |
| Zytostom | cytostome |
| Kustodie | custody |
| -ektomie | -ectomy |
| Kolektomie | colectomy |
| Koniotomie | cricothyrotomy |
| Mikrotomie | microtomy |