uredinium

noun
ure·din·i·um | \ˌyu̇r-ə-ˈdi-nē-əm \
plural uredinia\ˌyu̇r-ə-ˈdi-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

Other Words from uredinium

uredinial \ˌyu̇r-ə-ˈdi-nē-əl \ adjective

First Known Use of uredinium

1905, in the meaning defined above

History and Etymology for uredinium

New Latin, from Latin uredin-, uredo burning, blight, from urere to burn — more at ember

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The first known use of uredinium was in 1905

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