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

One of China’s most influential cultural figures, Wang is not simply a celebrity endorsement but occupies a rare position at the intersection of youth identity, entertainment, and fashion authority. —Yiling Pan, Vogue, 17 Feb. 2026

Future work will explore outdoor scenarios, such as intersections and urban streets, where longer distances and more dynamic conditions introduce additional challenges. —Prabhat Ranjan Mishra, Interesting Engineering, 16 Feb. 2026

The pet store’s exit will mark the second larger tenant to close up at the shopping center at the corner of the always busy Chapman Avenue and Tustin Street intersection. —Samantha Gowen, Oc Register, 16 Feb. 2026

Six people were hospitalized following a three-car crash at an intersection in Blythe on Sunday, according to Riverside County firefighters. —Dean Fioresi, CBS News, 16 Feb. 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