plural noun

: an order of parasitic basidiomycetous fungi that cause smuts of various plants and especially of cereal grasses and have a complex life cycle which may include conidia production and in which sessile haploid basidiospores ultimately yield thick-walled dark-colored chlamydospores which typically replace the ovaries of an infected plant in a smutty mass and germinate with a meiosis to form a promycelium and begin a new basidial generation compare uredinales , ustilago see tilletiaceae

Word History


New Latin, from Ustilagin-, Ustilago + -ales

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 Ustilaginales

Cite this Entry

“Ustilaginales.” Dictionary, Merriam-Webster, Accessed 4 Mar. 2024.

Love words? Need even more definitions?

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