[ bloch ]
/ blɒtʃ /
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See synonyms for: blotch / blotched / blotching on Thesaurus.com


a large, irregular spot or blot.
Plant Pathology.
  1. a diseased, discolored spot or area on a plant.
  2. a disease so characterized, usually accompanied by cankers and lesions.
a skin eruption; blemish.

verb (used with object)

to mark with blotches; blot, spot, or blur: The floor of the forest was blotched with cool, dark moss.


Textiles. of or relating to blotch printing, or to the colored ground produced by this process.



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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of blotch

1595–1605; perhaps blend of blot1 + botch2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for blotch

/ (blɒtʃ) /


an irregular spot or discoloration, esp a dark and relatively large one such as an ink stain


to become or cause to become marked by such discoloration
(intr) (of a pen or ink) to write or flow unevenly in blotches
C17: probably from botch, influenced by blot 1
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

Scientific definitions for blotch

[ blŏch ]

Any of several plant diseases caused by fungi and resulting in brown or black dead areas on leaves or fruit.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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