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leaf blight

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leaf blight

–noun Plant Pathology.
1. a symptom or phase of many diseases of plants, characterized by necrotic spots or streaks on the leaves, accompanied by seed rot and seedling blight.
2. any disease so characterized.

Origin:
1840–50
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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leaf blight

noun
any blight causing a browning and falling of the leaves of a plant 
WordNet® 3.0, © 2006 by Princeton University.
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