onion smudge

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

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Learn More About onion smudge

Dictionary Entries Near onion smudge

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Cite this Entry

“Onion smudge.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/onion%20smudge. Accessed 21 Oct. 2021.

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