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The definition of intersection

3 Definitions of: intersection

    1. noun, a point at which things intersect, esp a road junction
    2. noun, the act of intersecting or the state of being intersected
    3. noun, 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
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    5. Show me the etymology of the word: intersection
 

From Collins