intersection

noun

in·​ter·​sec·​tion ˌin-tər-ˈsek-shən 

especially in sense 1 ˈin-tər-ˌsek-

1

: a place or area where two or more things (such as streets) intersect

2

: the act or process of intersecting

3

a

: the set of elements common to two or more sets

especially : the set of points common to two geometric configurations

b

: the operation of finding the intersection of two or more sets

Illustration of intersection

• a intersection 3a

Synonyms of intersection

• junction
• corner
• crossroad
• crossing

Examples of intersection in a Sentence

The accident occurred at a busy intersection.

two possible points of intersection

the intersection of line A and line B

Recent Examples on the Web

The shootout happened at a busy intersection about 5 miles (8 kilometers) west of downtown Denver. — Rebecca Cohen, NBC news, 6 Nov. 2026

The intersection of Midway and 25th street is a good three miles from the intracoastal, which could mean our toothy friend here had to do quite a bit of swimming to end up there. — Austin Perry Outkick, FOXNews.com, 6 Nov. 2026

Caltrans conducted local road improvements on the project’s detour routes, including the resurfacing and striping of roads and intersections, installing traffic cameras and placing temporary traffic signals. — Karen Garcia, Los Angeles Times, 6 Nov. 2026

Recommended Stories Meyer says that the finding challenges our modern assumptions of religion, drugs and the intersection of the two. — Mary Randolph, Scientific American, 5 Nov. 2026

Word History

First Known Use

1559, in the meaning defined at sense 2

Rhymes for intersection

• circumspection
• disaffection
• disconnection
• disinfection
• dorsiflexion
• imperfection
• indirection
• insurrection
• intellection
• interjection
• introjection
• introspection

Kids Definition

intersection

noun

in·​ter·​sec·​tion ˌint-ər-ˈsek-shən 

1

: the act or process of intersecting

2

: the place or point where two or more things and especially streets intersect

a busy intersection

3

: the set of mathematical elements shared by two or more sets

especially : the set of points shared by two geometric figures