Sphaerotheca

noun
Sphaero·​the·​ca | \ -ˈthēkə \

Definition of Sphaerotheca

: a genus of powdery mildews (family Erysiphaceae) having perithecia with one ascus and unbranched appendages that resemble hyphae — see hop mildew

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!

History and Etymology for Sphaerotheca

New Latin, from sphaer- + theca

Learn More About Sphaerotheca

Dictionary Entries Near Sphaerotheca

Sphaerostilbe

Sphaerotheca

Sphaerotilus

See More Nearby Entries 

Statistics for Sphaerotheca

Cite this Entry

“Sphaerotheca.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Sphaerotheca. Accessed 23 May. 2022.

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

WORD OF THE DAY

Test Your Vocabulary

Name That Color

  • a light greenish blue color
  • Name that color:
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

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