Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

onion smudge

noun
variants: or onion scab

Definition of onion smudge

1 : a common fungus disease of the onion characterized by black concentric internal rings or smutty spots on the surface of the bulb scales
2 : the fungus (Colletotrichum circinans) that causes onion smudge

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!

Learn More about onion smudge

Statistics for onion smudge

Look-up Popularity

Comments on onion smudge

What made you want to look up onion smudge? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

redoubtable

Listen to the pronounciation of redoubtable

formidable, illustrious, or eminent

Get Word of the Day daily email!

Test Your Vocabulary

The Exceptions Quiz III

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

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!

Words at Play
Ask the Editors
Word Games