1The point or act of two or more roads, lines, or paths crossing each other.
二つの道路が交差する地点に信号機がある。
There is a traffic light at the point where the two roads cross.
グラフの二本の線が交差するところを見つけてください。
Please find the point where the two lines on the graph cross.
彼と私の意見が交差して、話し合いが長引いた。
Our opinions crossed each other, and the discussion dragged on.
2In genetics, the exchange of segments between chromosomes during recombination; a technical term for 'crossing over.'
減数分裂の際に染色体の交差が起こり、遺伝子が組み換えられる。
During meiosis, chromosomal crossing over occurs and genes are recombined.