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1. Synonym(s): scrotum
2. Obsolete. A pouch or sac; for example, in marsupials.
n. pl. marsu·pia (-pē-ə)
1. An external pouch or fold on the abdomen of most female marsupials, containing the mammary glands and in which the young continue to develop after leaving the uterus.
2. A temporary pouch in certain fishes, amphibians, and invertebrates in which eggs are carried until hatched. Also called brood pouch.
marsupium(1) An obsolete synonym for scrotum.
(2) The pouch of marsupials.
marsupiumthe pouch of a MARSUPIAL mammal.
pl. marsupia [L.] pouch; the scrotum.