noun (plural peridia /-dɪə/)Botany
- The outer skin of a sporangium or other fruiting body of a fungus.More example sentences
- Numerous golden sporangia with persistent peridia still intact formed on the bark surface and on mosses.
- This is an example of a peridium, a rather vague term that includes any shell or membrane that encloses spores - for example, the visible outer membrane of a puffball.
early 19th century: from Greek pēridion, literally 'small wallet', diminutive of pēra.
More definitions of peridiumDefinition of peridium in:
- The US English dictionary