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

At an intersection in Hyde Park that, days earlier, had been the scene of chaos — a young girl on the ground, a car with a teenage boy on the windshield, a mother screaming — Jonathan Hale led his band of rebels. — Andrew J. Campa, Los Angeles Times, 16 Oct. 2026

For most of my career, the obvious intersections between business and politics were relatively easy to identify. — Amanda Simonian, Forbes.com, 16 Oct. 2026

Slushy Noobz has over million additional followers on Instagram and TikTok for digital content at the intersection of entertainment, music and fashion. — Etan Vlessing, HollywoodReporter, 15 Oct. 2026

At the same time, a traffic signal at Hazel Avenue and Folsom Boulevard was flashing in all directions, disrupting train signals at three additional intersections, Selenis said. — Sacbee.com, 15 Oct. 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