| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | molekulo | molekuloj |
| Accusative | molekulon | molekulojn |
| Czech | molekula |
|---|---|
| Dutch | molecuul |
| English | molecule |
| German | Molekül |
| Papiamento | molekül |
| Saterland Frisian | Molekül |
| Spanish | molécula |
| Swedish | molekyl |
| Turkish | molekül |
| Welsh | molecwl |
| West Frisian | molekule |