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

In Wallingford, work will be done at the intersection of Route 150 (Main Street) at Hill Avenue and Chapel Street and Route 150 (Woodhouse Avenue) at South Airline Road and Kondracki Lane. — Sean Krofssik, Hartford Courant, 26 Sep. 2026

For now, the vision involves replacing the aging Indian Creek bridge, rebuilding intersections on either end, and constructing an overpass to carry cars over the Union Pacific tracks on the south bank of the stream. — Mark Dee, Idaho Statesman, 25 Sep. 2026

The Climate Leaders Roundtable Breakfast promised candid dialogues on topics exploring the intersection of technology, fashion and climate. — Roy Stephen Canivel, Footwear News, 25 Sep. 2026

The intersection will need to be closed for about 12 weeks but area residents will have local access, Pubentz said. — Gloria Casas, Chicago Tribune, 24 Sep. 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