Venn diagram
noun/ˈven daɪəɡræm/
/ˈven daɪəɡræm/
(mathematics)- a picture showing sets (= groups of things that have a shared quality) as circles that cross over each other, to show which qualities the different sets have in commonWord Originearly 20th cent.: named after John Venn (1834–1923), English logician.
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Venn diagram