• noun
• synonym
• antonym

• John Venn (noun)
  1. 1834-1923 english logician who introduced Venn diagrams
• Venn diagram (noun)
  1. a picture showing the relationship between several things by using circles that partly cover each other
• Venn's diagram (noun)
  1. the universal set a diagram that uses circles to represent mathematical or logical sets pictorially inside a rectangle ; elements that are common to more than one set are represented by intersections of the circles
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