peridium

noun
pe·​rid·​i·​um | \ pə-ˈri-dē-əm How to pronounce peridium (audio) \
plural peridia\ pə-​ˈri-​dē-​ə How to pronounce peridia (audio) \

Definition of peridium

: the outer envelope of the sporophore of many fungi

First Known Use of peridium

circa 1823, in the meaning defined above

History and Etymology for peridium

New Latin, from Greek pēridion, diminutive of pēra leather bag

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The first known use of peridium was circa 1823

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