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

Though the 34 cameras have been mounted at intersections throughout the city for several years, there's a new wave of suspicion about them and the way they're utilized by law enforcement. — Nicole Comstock, CBS News, 12 Aug. 2026

It's published by Sony, a company at the intersection of Western and Japanese philosophies. — Jordan Minor, PC Magazine, 11 Aug. 2026

The new Rewards app is designed to bring these behaviors together in a single experience built at the intersection of AI and e-commerce. — Arthur Zaczkiewicz, Footwear News, 11 Aug. 2026

At a stoplight at the intersection of East Flamingo Road and Koval Lane, Shakur and Knight were shot. — Sasha Pezenik, ABC News, 10 Aug. 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