Share this entry

peridium Line breaks: per|idium
Pronunciation: /pɪˈrɪdɪəm/

Definition of peridium in English:

noun (plural peridia pɪˈrɪdɪə)

The outer skin of a sporangium or other fruiting body of a fungus.
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.

Definition of peridium in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day fortissimo
Pronunciation: fɔːˈtɪsɪməʊ
(especially as a direction) very loud or loudly