Definition of marsupium in English:

marsupium

Syllabification: mar·su·pi·um
Pronunciation: /märˈso͞opēəm
 
/

noun (plural marsupia /-pēə/)

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

Origin

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

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