: a genus of imperfect fungi (family Dematiaceae) forming conidia-bearing sclerotia which replace the grain in grasses and later produce ascigerous heads similar to those in Claviceps see green smut

Word History


New Latin, from Ustilagin-, Ustilago + -oidea

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near Ustilaginoidea

Cite this Entry

“Ustilaginoidea.” Dictionary, Merriam-Webster, Accessed 4 Oct. 2023.

Love words? Need even more definitions?

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