uredinium

noun

ure·din·i·um ˌyu̇r-ə-ˈdi-nē-əm

plural uredinia ˌyu̇r-ə-ˈdi-nē-ə

: a usually reddish or black mass of hyphae and spores of a rust fungus forming pustules that rupture the host's cuticle

uredinial

ˌyu̇r-ə-ˈdi-nē-əl

adjective

Word History

Etymology

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

First Known Use

1905, in the meaning defined above

Time Traveler

The first known use of uredinium was in 1905

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Browse Nearby Words

Urediniopsis

uredinium

uredinoid

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Cite this Entry

Style

“Uredinium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uredinium. Accessed 31 Oct. 2025.

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