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

Instead of catering to automobile traffic like typical intersection signal systems, Jung's invention adjusts crossing signal times based on the slowest pedestrian's pace. — Nicole Fallert, USA Today, 26 June 2026

Formerly the Vice President of Global Brand and Marketing at Amazon, Cheever is now fortifying Pinterest’s position at the intersection of culture, commerce, and technology. — Slma Shelbayah, Forbes.com, 25 June 2026

Others launched fireworks into the sky at an intersection. — Matthew Rodriguez, CBS News, 25 June 2026

Tucker was riding on the back of a motorcycle driven by Dillon Kelly, 33, of Michigan, who was pronounced dead at the scene at the intersection of Indian Boundary Road and Plaza Drive. — Jim Woods, Chicago Tribune, 25 June 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