crown rust


Definition of crown rust

: a leaf rust of oats and other grasses that is caused by a fungus (Puccinia coronata) and is characterized by rounded light-orange uredinia and buried telia

First Known Use of crown rust

circa 1899, in the meaning defined above

Learn More About crown rust

Time Traveler for crown rust

Time Traveler

The first known use of crown rust was circa 1899

See more words from the same year

Dictionary Entries Near crown rust

crown-rump length

crown rust

crown saw

See More Nearby Entries 

Statistics for crown rust

Cite this Entry

“Crown rust.” Dictionary, Merriam-Webster, Accessed 8 Dec. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Name that Thing: Flower Edition

Name That Thing

Test your visual vocabulary with our 10-question challenge!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!