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Meaning of early blight

ear'ly blight'

Pronunciation: [key]
— Plant Pathol. Plant Pathol.
  1. a disease of plants characterized by leaf spotting, defoliation, and stunted growth, caused by any of several fungi, as Alternaria solani or Cercospora apii.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.