uredinium

uredinium [yoo r-i-din-ee-uh m] Word Origin noun, plural u·re·din·i·a [yoo r-i-din-ee-uh] /ˌyʊər ɪˈdɪn i ə/.

1. Mycology. the fruiting body of the rust fungi that bears urediospores.

Also uredium. Origin of uredinium 1905–10; New Latin ūrēdin- (stem of Latin ūrēdō; see uredo) + -ium -ium Also called uredosorus. Related formsu·re·din·i·al, adjective