1. a pouch on the abdomen of female marsupials (such as kangaroos and opossums) in which they carry and nurse their young
Usage: biological term

Examples

• The baby kangaroo crawled into its mother’s marsupium shortly after birth.
• Female opossums carry their offspring in a marsupium until they are old enough to survive independently.
• The marsupium provides protection and nourishment for developing marsupial young.
• Scientists studied the structure of the koala’s marsupium to understand marsupial reproduction.
• The tiny joey remained in the marsupium for several months before emerging.
• Not all marsupials have a well-developed marsupium; some species have only skin folds.