# intercept

The intercept is the point at which a curve or straight line intersects the *x*, *y*, or *z* axis of a coordinate
system. The parabola *y* = *x *^{2} – 4, for example, has a *y*-intercept at –4 and *x* intercepts
at +2 and –2. The term is also used to refer to the portion of a line lying
between two other lines or planes.