Definition of marsupium in English:

marsupium

noun

Zoology
  • A pouch that protects eggs, offspring, or reproductive structures, especially the pouch of a female marsupial mammal.

    • ‘In some (but by no means all) species of marsupials, females develop a pouch or marsupium in which the young are nursed.’
    • ‘A marsupium is present and opens to the rear.’
    • ‘The eggs are carried by the female in an open marsupium.’
    • ‘Members of this family have a well developed marsupium that opens anteriorly.’
    • ‘Their marsupium is well developed, opens to the rear, and contains only 2 teats.’
    marsupium
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Origin

Mid 17th century: via Latin from Greek marsupion, diminutive of marsipos purse.

Pronunciation:

marsupium

/märˈso͞opēəm/