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 semi sailed through the intersection and struck a bridge abutment supporting RTD light rail trains. —Alan Gionet, CBS News, 28 Nov. 2025

Yara’s brief existence at the intersection of AI and mental health care illustrates the hopes and the many questions surrounding large language models and their capabilities as the technology is increasingly adopted across society and utilized as a tool to help address various challenges. —Sage Lazzaro, Fortune, 28 Nov. 2025

Michigan drivers can be no closer than 20 feet away from a truck that is stopped at an intersection. —Natalie Davies, Freep.com, 28 Nov. 2025

Stern won the council’s approval for a three-hour parking limit along Paseo Las Verdes, east of its intersection with Quail Gardens Drive. —Barbara Henry, San Diego Union-Tribune, 27 Nov. 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