uredo

Noun

u=re=do

CIDE DICTIONARY

uredo, n. [L., a blast, blight, a burning itch, fr. urere to burn, to scorch.].

One of the stages in the life history of certain rusts (Uredinales), regarded at one time as a distinct genus. It is a summer stage preceding the teleutospore, or winter stage. See Uredinales, in the Supplement. [1913 Webster]
Nettle rash. See Urticaria. [1913 Webster]

For further exploring for "uredo" in Webster Dictionary Online