To save this word, you'll need to log in.
Definition of white mold
1 : cottony rot
2 : any of several diseases of plants that resemble cottony rot and are caused by fungi especially of the genus Ramularia or Erostrotheca
Test Your Vocabulary
Semantic Drift Quiz
- Which of the following was once a synonym for fun?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Share white mold