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

The intersection of Bird and Red roads, which is located in unincorporated Miami-Dade County just outside of Coral Gables, is prime real estate and has long been a major retail corridor. —Miami Herald, 3 Jan. 2026

Approximately 50 to 100 people attended the protest, taking to all four corners of the intersection with signs and chants. —Mathew Miranda, Sacbee.com, 3 Jan. 2026

Press clippings from the earlier incarnation of what was United Press International Wire Service in 1983 describe as many as 10,000 cars crowding the surrounding roads and intersections with onlookers eager to gander at the amazing displays and décor. —Philip Potempa, Chicago Tribune, 2 Jan. 2026

Access points include the west entrance at 1801 Cliff Drive, the east entrance near 4398 Gladstone Blvd, and the intersection of Walrond Avenue and Gladstone Boulevard. —Monty Davis, Kansas City Star, 1 Jan. 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