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A spot or a stain caused by a discoloring substance: a blot of paint.
(noun)
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A stain on one's character or reputation; a disgrace. See Synonyms at stain.
(noun)
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The Northern, Southern, or Western blot analyses.
(noun)
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To spot or stain, as with a discoloring substance.
(verb-transitive)
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To bring moral disgrace to.
(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.