The Collaborative International Dictionary
Soredia
Soredia \So*re"di*a\, n., pl. of Soredium.
Soredia
Soredium \So*re"di*um\, n.; pl. Soredia. [NL., fr. Gr. ? a heap.] (Bot.) A patch of granular bodies on the surface of the thallus of lichens.
Wiktionary
soredia
n. (plural of soredium English)