a place where two or more roads meet, especially when at least one is a major highway; junction.
any place of intersection or the act or fact of intersecting.
Also called meet, product. the set of elements that two or more sets have in common. Symbol:
the greatest lower bound of two elements in a lattice.

1550–60; < Latin intersectiōn- (stem of intersectiō). See intersect, -ion

intersectional, adjective
nonintersectional, adjective

1. crossroads, crossing, corner. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To inter-section
World English Dictionary
intersection (ˌɪntəˈsɛkʃən, ˈɪntəˌsɛk-)
1.  a point at which things intersect, esp a road junction
2.  the act of intersecting or the state of being intersected
3.  maths
 a.  a point or set of points common to two or more geometric configurations
 b.  Also called: product the set of elements that are common to two sets
 c.  the operation that yields that set from a pair of given sets. Symbol: ∩, as in AB

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

1550s, from L. intersectionem (nom. intersectio) "a cutting asunder, intersection," from intersectus, pp. of intersecare "intersect, cut asunder," from inter- "between" + secare "to cut" (see section). Originally a term in geometry, meaning "crossroads" is from 1864.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Science Dictionary
intersection   (ĭn'tər-sěk'shən)  Pronunciation Key 
  1. The point or set of points where one line, surface, or solid crosses another.

  2. The set that contains only those elements shared by two or more sets. The intersection of the sets {3,4,5,6} and {4,6,8,10} is the set {4,6}. The symbol for intersection is . Compare union.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature