aecidium

noun ae·cid·i·um \ē-ˈsi-dē-əm\

Definition of aecidium

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

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

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Origin and Etymology of aecidium

borrowed from New Latin, irregularly for *oecidium, borrowed from Greek oikídion, diminutive of oîkos “house, abode, room” — more at vicinity, -idium


First Known Use: 1751


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