Meaning of -ium in English:


Pronunciation /ɪəm/


  • 1Forming nouns adopted unchanged from Latin (such as alluvium) or based on Latin or Greek words (such as euphonium).

  • 2

    (also -um)
    Forming names of metallic elements.

    • ‘magnesium’
  • 3Denoting a region of the body.

    • ‘pericardium’
  • 4Denoting a biological structure.

    • ‘mycelium’


Modern Latin in -ium (sense 2, -ium sense 3, -ium sense 4), via Latin from Greek -ion.