Synonym: firmaĵo²
| Part of speech | common noun |
|---|---|
| Hyphenation | fir·ma·ment·o |
| Nominative | firmamento |
|---|---|
| Accusative | firmamenton |
| Afrikaans | hemelruim |
|---|---|
| Dutch | firmament; hemel; uitspansel; zwerk |
| English | firmament; welkin |
| French | firmament |
| German | Firmament; Himmelsgewölbe; Sternenzelt |
| Spanish | firmamento |
| West Frisian | firmamint |