| Arthropoda | arthropods |
| Arthropode | arthropod |
| Anthropozän | Anthropocene |
| anthropo- | anthropo- |
| Arthrologie | arthrology |
| Arthrose | osteoarthritis arthrosis osteoartrit |
| Orthopäde | orthopedist orthopaedist orthopaedic specialist orthopedic specialist orthopedic surgeon |
| Erythropoese | erythropoiesis |
| Anthroponym | anthroponym |
| anthropogen | anthropogenic human-caused man-made |
| Gastropode | gastropod |
| Arthritis | arthritis |
| arthrotisch | arthrotic |
| Arthropathie | arthropathy |
| Arthroskopie | arthroscopy |
| Orthogon | rectangle |
| Orthoepie | orthoepy |
| Orthofoto | orthophoto |
| Orthopädie | orthopaedics orthoorthopedicsaedics |
| Orthopädin | orthopaedic specialist orthopaedist orthopedic specialist orthopedist |