plural noun

: a family of smuts (order Ustilaginales) that is distinguished from the Ustilaginaceae by the simple promycelium bearing the spores in an apical cluster and that includes numerous genera some of which (as Tilletia and Urocystis) contain economically important parasites of cultivated plants compare ustilago

Word History


New Latin, from Tilletia, type genus + -aceae

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 Tilletiaceae

Cite this Entry

“Tilletiaceae.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Tilletiaceae. Accessed 24 Jul. 2024.

Love words? Need even more definitions?

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