Wordnet 3.0
NOUN (1)
1.
a diagram that uses circles to represent mathematical or logical sets pictorially inside a rectangle (the universal set);
elements that are common to more than one set are represented by intersections of the circles;
[syn: Venn diagram, Venn's diagram]
WordNet (r) 3.0 (2006):
Venn diagram
n 1: a diagram that uses circles to represent mathematical or
logical sets pictorially inside a rectangle (the universal
set); elements that are common to more than one set are
represented by intersections of the circles [syn: Venn
diagram, Venn's diagram]