noun, plural uredinia [yoor-i-din-ee-uh] .
Mycology. the fruiting body of the rust fungi that bears urediospores.
Also, uredium.
Also called uredosorus.

1905–10; < Neo-Latin < ūrēdin- (stem of Latin ūrēdō; see uredo) + -ium -ium

uredinial, adjective
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World English Dictionary
uredium or uredinium (jʊˈriːdɪəm, ˌjʊərɪˈdɪnɪəm)
n , pl -dia, -dinia
Also called: uredosorus a spore-producing body of some rust fungi in which uredospores are formed
[C20: from New Latin, from uredo]
uredinium or uredinium (jʊˈriːdɪəm, ˌjʊərɪˈdɪnɪəm, -dɪə, -ˈdɪnɪə)
[C20: from New Latin, from uredo]
u'redial or uredinium

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Example sentences
Each uredinium provided sufficient spores to inoculate a differential host series.
One week after inoculation, leaves were trimmed so that only one uredinium per plant remained.
Heavy infection is not rare, causing entire leaves to become yellow or brown with dense uredinium and/or telium production.
One week after inoculation, the leaves were trimmed so that only one uredinium remained on each plant.
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