uredospore

noun

ure·​do·​spore yu̇-ˈrē-də-ˌspȯr 

variants or urediniospore

yu̇r-ə-ˈdi-nē-ə-ˌspȯr 

or less commonly urediospore

yu̇-ˈrē-dē-ə-ˌspȯr 

: one of the thin-walled spores that are produced by uredinial hyphae and spread the fungus vegetatively

Word History

Etymology

New Latin uredium uredinium (from Latin uredo) + English -o- + spore

First Known Use

1875, in the meaning defined above