Coleosporium

noun

Co·​le·​o·​spo·​ri·​um

-lēəˈspōrēəm,

-spȯr-

: a genus of rusts (family Melampsoraceae) having the teliospores united in a single-layered or double-layered waxy cushion

Word History

Etymology

New Latin, from cole- + -sporium

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!