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

• 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

But creating happiness in cities also requires both spectacular design and a deep understanding of how the intersection of architecture, urban design, and the public realm affects our emotional and physical well-being. —Elizabeth Fazzare, Architectural Digest, 26 Sep. 2025

Jody Gerson and Phil Schermer were on hand to discuss the intersection of music, technology and mental health at Variety‘s Entertainment and Technology Summit in Los Angeles yesterday, discussing how attitudes have shifted towards mental health and its destigmatization. —Steven J. Horowitz, Variety, 26 Sep. 2025

Brinkman pointed to the addition of a traffic signal at the Banks to Lowman road intersection with 55 as a project that has helped some traffic issues. —Sally Krutzig, Idaho Statesman, 26 Sep. 2025

Kelly Meyerhofer covers colleges and universities, while Cleo Krejci covers technical colleges and the intersection between education and the workforce. —Greg Borowski, jsonline.com, 26 Sep. 2025

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