intersection (n.)youdaoicibaDictYouDict[intersection 词源字典]
"act or fact of crossing," 1550s, from Middle French intersection (14c.) and directly from Latin intersectionem (nominative intersectio) "a cutting asunder, intersection," noun of action from past participle stem of intersecare "intersect, cut asunder," from inter- "between" (see inter-) + secare "to cut" (see section). Originally a term in geometry; meaning "crossroads" is from 1864.[intersection etymology, intersection origin, 英语词源]