Daily word games to challenge your mind
Finding 9-letter words ending in IUM? This complete list will help. Popular examples include ALUMINIUM, AMERICIUM, ANTHODIUM, plus ANTHURIUM, BACTERIUM, BERKELIUM and many more. Use the table below to find the perfect word for your game.
| Word | Definition | Length | Syllables |
|---|---|---|---|
| aluminium | 9 | 4 | |
| americium | 9 | 4 | |
| anthodium | 9 | 3 | |
| anthurium | 9 | 3 | |
| bacterium | 9 | 3 | |
| berkelium | 9 | 3 | |
| beryllium | 9 | 3 | |
| bronchium | 9 | 2 | |
| caldarium | 9 | 3 | |
| calvarium | 9 | 3 | |
| coccidium | 9 | 3 | |
| collegium | 9 | 3 | |
| colluvium | 9 | 3 | |
| collyrium | 9 | 3 | |
| columbium | 9 | 3 | |
| contagium | 9 | 3 | |
| criterium | 9 | 3 | |
| ctenidium | 9 | 3 | |
| cymbidium | 9 | 3 | |
| decennium | 9 | 3 | |
| dentalium | 9 | 3 | |
| deuterium | 9 | 3 | |
| diazonium | 9 | 3 | |
| dichasium | 9 | 3 | |
| effluvium | 9 | 3 | |
| epicedium | 9 | 4 | |
| epimysium | 9 | 4 | |
| euphonium | 9 | 3 | |
| gelsemium | 9 | 3 | |
| germanium | 9 | 3 | |
| gymnasium | 9 | 3 | |
| gynaecium | 9 | 3 | |
| gynoecium | 9 | 3 | |
| harmonium | 9 | 3 | |
| herbarium | 9 | 3 | |
| hospitium | 9 | 3 | |
| hydronium | 9 | 3 | |
| magnesium | 9 | 3 | |
| manubrium | 9 | 3 | |
| marsupium | 9 | 3 | |
| mazaedium | 9 | 3 | |
| neodymium | 9 | 3 | |
| neptunium | 9 | 3 | |
| palladium | 9 | 3 | |
| plutonium | 9 | 3 | |
| pollinium | 9 | 3 | |
| potassium | 9 | 3 | |
| presidium | 9 | 3 | |
| pterygium | 9 | 3 | |
| pycnidium | 9 | 3 | |
| reptilium | 9 | 3 | |
| rhizobium | 9 | 3 | |
| ruthenium | 9 | 3 | |
| sacrarium | 9 | 3 | |
| sensorium | 9 | 3 | |
| septarium | 9 | 3 | |
| strontium | 9 | 2 | |
| sulfonium | 9 | 3 | |
| sympodium | 9 | 3 | |
| symposium | 9 | 3 | |
| syncytium | 9 | 3 | |
| tellurium | 9 | 3 | |
| terrarium | 9 | 3 | |
| trapezium | 9 | 3 | |
| triennium | 9 | 2 | |
| trifolium | 9 | 3 | |
| triforium | 9 | 3 | |
| uredinium | 9 | 4 | |
| uropygium | 9 | 4 | |
| vestigium | 9 | 3 | |
| ytterbium | 9 | 3 | |
| zirconium | 9 | 3 |
What’s typical about IUM-ending words?
IUM often marks suffix families; think about derivatives when guessing.
Do you include UK/US spellings?
Where they exist, both may appear.