aecidium

noun
ae·​cid·​i·​um | \ē-ˈsi-dē-əm\

Definition of aecidium 

1 plural aecidia\ē-​ˈsi-​dē-​ə\ : aecium especially : a cup-shaped or spheroidal aecium with a peridial layer

2 capitalized : a form genus of rust fungi having only an aecial stage with toothed cup-shaped peridia

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First Known Use of aecidium

1751, in the meaning defined at sense 2

History and Etymology for aecidium

borrowed from New Latin, irregularly for *oecidium, borrowed from Greek oikídion, diminutive of oîkos “house, abode, room”

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Dictionary Entries near aecidium

AEC

aecidial

aecidiospore

aecidium

aeciospore

aecium

aecology

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The first known use of aecidium was in 1751

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