Dictionary

uredinium

noun ure·din·i·um \ˌyr-ə-ˈdi-nē-əm\
plural -ia \-nē-ə\

Definition of UREDINIUM

:  a usually reddish or black mass of hyphae and spores of a rust fungus forming pustules that rupture the host's cuticle
ure·din·i·al \-nē-əl\ adjective

Origin of UREDINIUM

New Latin, from Latin uredin-, uredo burning, blight, from urere to burn — more at ember
First Known Use: 1905

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