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aecidium

American  
[ee-sid-ee-uhm] / iˈsɪd i əm /

noun

Mycology.

plural

aecidia
  1. an aecium in which the spores are always formed in chains and enclosed in a cup-shaped peridium.


Etymology

Origin of aecidium

From New Latin, dating back to 1865–70; aecium, -idium