Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To cut across or through: The path intersects the park.
  • transitive v. To form an intersection with; cross: The road intersects the highway a mile from here.
  • intransitive v. To cut across or overlap each other: circles intersecting on a graph.
  • intransitive v. To form an intersection; cross: These two fences intersect at the creek.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. to cross; to cut
  • v. of two sets, to have at least one element in common

from the GNU version of the Collaborative International Dictionary of English

  • intransitive v. To cut into one another; to meet and cross each other.
  • transitive v. To cut into or between; to cut or cross mutually; to divide into parts.

from The Century Dictionary and Cyclopedia

  • To cut or divide into parts; lie or pass across: as, the ecliptic intersects the equator.
  • To cut apart; separate by intervening.
  • To cut into one another; meet and cross each other; have, as two geometrical loci, one or more points in common: as, intersecting lines.
  • n. In geometry, a point of intersection.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. meet at a point

Etymologies

Latin intersecāre, intersect- : inter-, inter- + secāre, to cut; see sek- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin intersecare ("to cut between, cut off"), from inter ("between") + secare ("to cut"). (Wiktionary)

Examples

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