noun
point of discontinuity
Mathematical term for a point where a function is not continuous.
この関数は x=0 で不連続点を持つ。
This function has a point of discontinuity at x=0.
連続 means 'continuity' or 'continuous'; 不連続点 is the point where continuity fails.
Compound of 不 (non-), 連続 (continuity), and 点 (point). A straightforward technical term.