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

• 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

With recent polls showing Mamdani leading his rivals by double digits, the intersection of Hochul’s pragmatism, Mamdani’s outreach, and the powerful symbolism of their evolving relationship promises a uniquely unpredictable contest for New York’s future. —Nick Lichtenberg, Fortune, 12 Sep. 2025

We’re positioned at the intersection of beauty, fashion and culture. —Matt Donnelly, Variety, 12 Sep. 2025

Manuka honey’s thicker texture and robust profile support its premium positioning — with consumers still prioritizing immunity and energy, the ingredient sits at the intersection of health and indulgence. —Footwear News, 12 Sep. 2025

Recent developments at the intersection of Crypto x AI have made the objective of coordination accelerationism explicit and thus hard to overlook. —Lawrence Wintermeyer, Forbes.com, 11 Sep. 2025

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