Synonym: zoetwaterpoliep
| Part of speech | common noun |
|---|---|
| Pronunciation | /ˈɦidra/ |
| Hyphenation | hy·dra |
| Gender | historically feminine, nowadays also masculine |
| Plural | hydra’s |
| Catalan | hidra |
|---|---|
| English | hydra |
| Esperanto | hidro |
| Faeroese | sjógvormur |
| French | hydre |
| German | Hydra |
| Spanish | hidra |