Definition of intersect
: to pierce or divide by passing through or across : cross a comet intersecting earth's orbit one line intersects another
1 : to meet and cross at a point lines intersecting at right angles
2 : to share a common area : overlap where morality and self-interest intersect
Examples of intersect in a Sentence
A dry stream bed intersects the trail in several places.
Line A intersects with line B.
The two roads intersect at the edge of town.
Origin and Etymology of intersect
Latin intersectus, past participle of intersecare, from inter- + secare to cut — more at saw
First Known Use: 1615
INTERSECT Defined for English Language Learners
Definition of intersect for English Language Learners
: to divide (something) by passing through or across it
: to meet and cross at one or more points
: to share some common area
INTERSECT Defined for Kids
Seen and Heard
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