(n.) A line which approaches nearer to some curve than assignable distance, but, though infinitely extended, would never meet it. Asymptotes may be straight lines or curves. A rectilinear asymptote may be conceived as a tangent to the curve at an infinite distance.
Thesaurus Entries
approach, bottleneck, collision course, concentralization, concentration, concourse, concurrence, confluence, conflux, congress, convergence, converging, crossing, focalization, focus, funnel, hub, meeting, mutual approach, narrowing gap, radius, spokes, tangent
