stem rust noun
: a rust attacking the stem of a plant; especially : a destructive disease especially of wheat caused by a rust fungus (Puccinia graminis) which produces reddish-brown lesions in the uredospore stage and black lesions in the teliospore stage and has any of several plants of the barberry family as an intermediate host
: the fungus causing stem rust
First Known Use of STEM RUST
Seen & Heard
What made you want to look up stem rust? Please tell us where you read or heard it (including the quote, if possible).