| Part of speech | common noun |
|---|---|
| Hyphenation | ra·di·o |
| Nominative | radio |
|---|---|
| Accusative | radion |
| Afrikaans | straal |
|---|---|
| Albanian | rreze |
| Catalan | ràdio |
| Czech | paprsek |
| Danish | stråle |
| Dutch | straal |
| English | beam; ray |
| Faeroese | strála; geisli |
| Finnish | säde |
| French | rayon |
| German | Strahl |
| Greek | αχτίδα; ακτίνα |
| Hungarian | sugár |
| Icelandic | geisli |
| Italian | sciopero; raggio |
| Papiamento | rayo |
| Portuguese | raio |
| Saterland Frisian | Stroal |
| Spanish | rayo |
| Swedish | stråle |
| West Frisian | striel |