halo-blight

halo blight

noun
a disease of plants, characterized by small, necrotic leaf or fruit lesions surrounded by a yellowish, halolike band, caused by any of several bacteria of the genus Pseudomonas.

Origin:
1915–20

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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WordNet
halo blight

noun
1. a blight affecting the leaves of oats and other grasses 
2. a blight of bean plants 
WordNet® 3.0, © 2006 by Princeton University.
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