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Euler diagram

noun
Eu·​ler diagram | \ˈȯilə(r)-\
variants: or Euler's diagram \-​)z-​ \

Definition of Euler diagram 

: a graphic method employing circles to represent relations between and operations on classes and the terms of propositions by inclusion, exclusion, and intersection — compare venn diagram

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History and Etymology for Euler diagram

after Leonhard Euler †1783 Swiss mathematician and physicist

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