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

Adelmo’s moves into an intersection leased by Weitzman — one of its first retail centers in Dallas. —Sarah Blaskovich, Dallas Morning News, 23 Mar. 2026

The incident started when Lamar Alexander and Ronnie Jerome Hill robbed a Coral Gables jewelry store, then hijacked Ordoñez’s UPS truck 2 miles away and took him with them on a high-speed chase into Broward County that ended at a crowded Miramar intersection. —Cindy Krischer Goodman, Sun Sentinel, 23 Mar. 2026

Explore the intersection of technology and the military world. —Interesting Engineering, 23 Mar. 2026

Officials said the re-entry point is at the intersection of State Highway 115 and K Street. —Jennifer McRae, CBS News, 23 Mar. 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