From Latin intersecare, from inter ("between") + secare ("to cut").

• (America) IPA: /ɪntɚˈsɛkt/
• (RP) IPA: /ɪntəˈsɛkt/

intersect (intersects, present participle intersecting; simple past and past participle intersected)

1. (ambitransitive) 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.

   • 1782–1785, William Cowper, “(please specify the page)”, in The Task, a Poem, […], London: […] J[oseph] Johnson;  […], →OCLC ↗:

     Lands intersected by a narrow frith / Abhor each other.

2. (mathematics) Of two sets, to have at least one element in common.

• French: intersecter, interséquer
• Italian: interseccare
• Portuguese: intersectar, intersetar
• Spanish: intersecar

• French: intersecter, interséquer
• Italian: interseccare, intersecter; interséquer
• Portuguese: intersectar, intersetar
• Spanish: intersecar