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

At the intersection where she was killed, mourners set up a memorial at the base of a tree. —Colin Mixson, New York Daily News, 30 Apr. 2026

Two cars collided in a T-bone crash at a north Centennial intersection late Wednesday night, killing a woman, according to the Arapahoe County Sheriff’s Office. —Lauren Penington, Denver Post, 30 Apr. 2026

The changes come after several high-profile problems involving autonomous vehicles in San Francisco, including Waymo vehicles stalling and blocking intersections during a blackout in December. —Kenny Choi, CBS News, 30 Apr. 2026

On the advisory side, Formation is looking to lend its expertise across multiple types of work—pre-transaction consulting, M&A execution, long-term portfolio strategy—primarily at the intersection of financial and sporting decisions. —Eben Novy-Williams, Sportico.com, 30 Apr. 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