| Lingwa de Planeta | art-287 |
| teoria | |
| Lingwa de Planeta | art-287 | doktrina |
| Sambahsa-mundialect | art-288 | theoria |
| Deutsch | deu-000 | Theorie |
| English | eng-000 | theory |
| Esperanto | epo-000 | hipotezo |
| Esperanto | epo-000 | teorio |
| Nederlands | nld-000 | theorie |
| Novial | nov-000 | teorie |
| русский | rus-000 | теория |
| русский | rus-000 | учение |