yəˈrē(ˌ)dō noun
Etymology: New Latin, from Latin, blast, blight, burning itch, from urere to burn — more at ember
1. -s : the uredostage of a rust formerly regarded as a distinct genus
2. capitalized : a form genus of rusts including forms having either a uredostage only or having a uredostage together with pycnial and aecial stages