| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | bacilo | baciloj |
| Accusative | bacilon | bacilojn |
| Catalan | bacil |
|---|---|
| Danish | bacille |
| Dutch | bacil |
| English | bacillus |
| French | bacille |
| German | Bazillus; Spaltpilz |
| Hungarian | bacilus |
| Italian | bacillo |
| Papiamento | basel |
| Portuguese | bacilo |
| Russian | бацилла |
| Spanish | bacilo |
| Swedish | bacill |
| Turkish | basil |
| West Frisian | basil |