Intersect Definition

ĭntər-sĕkt

intersected, intersecting, intersects

verb

intersected, intersecting, intersects

To cut across or through.

The path intersects the park.

American Heritage

To cross each other.

Lines intersecting to form right angles.

Webster's New World

To divide into two parts by passing through or across; cut across.

A river intersects the plain.

Webster's New World

To form an intersection; cross.

These two fences intersect at the creek.

American Heritage

To cut into or between; to cut or cross mutually; to divide into parts.

Parallel lines don't intersect.

Any two diameters of a circle intersect each other at the centre.

Wiktionary

Synonyms:

Origin of Intersect

Latin intersecāre intersect- inter- inter- secāre to cut sek- in Indo-European roots

From American Heritage Dictionary of the English Language, 5th Edition
From Latin intersecare (“to cut between, cut off”), from inter (“between”) + secare (“to cut”).

From Wiktionary