Found 2 items, similar to peridium.
English → English (WordNet) Definition: peridium peridium n : outer layer of the spore-bearing organ in many fungi [also: peridia (pl)]
English → English (gcide) Definition: Peridium Peridium \Pe*rid"i*um\, n.; pl. Peridia. [NL., fr. Gr. ? about + ?, a dim. ending.] (Bot.) The envelope or coat of certain fungi, such as the puffballs and earthstars. [1913 Webster]