noun (plural marsupia /-pēə/)Zoology
A pouch that protects eggs, offspring, or reproductive structures, especially the pouch of a female marsupial mammal.
- A marsupium is present and opens to the rear.
- The eggs are carried by the female in an open marsupium.
- In some (but by no means all) species of marsupials, females develop a pouch or marsupium in which the young are nursed.
Mid 17th century: via Latin from Greek marsupion, diminutive of marsipos 'purse'.
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