in·ter·sec·tion

[in-ter-sek-shuhn]
noun
1.
a place where two or more roads meet, especially when at least one is a major highway; junction.
2.
any place of intersection or the act or fact of intersecting.
3.
Mathematics.
a.
Also called meet, product. the set of elements that two or more sets have in common. Symbol:
b.
the greatest lower bound of two elements in a lattice.

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

in·ter·sec·tion·al, adjective
non·in·ter·sec·tion·al, adjective


1. crossroads, crossing, corner.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To intersection
00:10
Intersection is always a great word to know.
So is ort. Does it mean:
a chattering or flighty, light-headed person.
a scrap or morsel of food left at a meal.
Collins
World English Dictionary
intersection (ˌɪntəˈsɛkʃən, ˈɪntəˌsɛk-) [Click for IPA pronunciation guide]
 
n
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
 
inter'sectional
 
adj

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

intersection
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
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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.
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Example sentences
The police said the officers had a green light at the intersection when the
  accident occurred.
No instead there was a fistfight going on in the middle of there intersection.
They are more efficient than a conventional intersection because traffic keeps
  moving without stopping for a light or sign.
There's an intersection where five streets come together.
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