Definition of halo blight
1
or less commonly halo spot
: a blight of beans and occasionally other legumes that is caused by a bacterium (Pseudomonas phaseolicola) and typically produces on the leaves, stems, and pods round water-soaked lesions surrounded by a yellowish zonation, the lesions finally turning brick red
2
: blight affecting the leaves of oats and other grasses caused by a bacterium (Pseudomonas coronafaciens) characterized by oval water-soaked lesions turning gray to brownish and surrounded by a pale zonation
Test Your Vocabulary
Which Word Does Not Belong?
-
- Which of these words does not mean "nonsense"?

Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share halo blight