Venn diagram
noun /ˈven daɪəɡræm/
/ˈven daɪəɡræm/
(mathematics- enlarge imagea 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 common
维恩图,文氏图(用圆表示集合之间的关系) 词源early 20th cent.: named after John Venn (1834–1923), English logician.