/ Dictionary / Index L leaf blotch: Meaning and Definition of Find definitions for: leaf' blotch" Pronunciation: [key] — Plant Pathol. Plant Pathol. a symptom or phase of certain esp. fungal diseases of plants, characterized by necrotic discoloration of the leaves. any disease so characterized. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. leaf blight leaf bud Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language