*intersection (n.)*a point where lines intersect;

Synonyms: intersection point / point of intersection

*intersection (n.)*a junction where one street or road crosses another;

*intersection (n.)*a point or set of points common to two or more geometric configurations;

*intersection (n.)*the set of elements common to two or more sets;

the set of red hats is the *intersection* of the set of hats and the set of red things

Synonyms: product /

Cartesian product *intersection (n.)*a representation of common ground between theories or phenomena;

*intersection (n.)*the act of intersecting (as joining by causing your path to intersect your target's path);