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leaf spot

noun, Plant Pathology
a limited, often circular, discolored, diseased area on a leaf, usually including a central region of necrosis.
any disease so characterized.
Origin of leaf spot
1900-05 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for leaf spot
  • Zonate leaf spot is primarily a foliar disease of tomato but has been observed infecting stems and fruit.
  • Bacterial angular leaf spot of strawberry is an important disease in strawberry nursery production.
  • Resistance to bacterial leaf spot and powdery mildew round out the checklist of outstanding qualities.
  • Handsome, dark green, semi-evergreen foliage is resistant to bacterial leaf spot.
  • leaf spot problems are more severe by excessive watering with over-head sprinkler irrigation.
British Dictionary definitions for leaf spot

leaf spot

any of various plant diseases, usually caused by fungi: characterized by dark lesions on the leaves
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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leaf spot in Science
leaf spot  
Any of various plant diseases resulting in well-defined necrotic areas on the leaves.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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