a straight line approached by a given curve as one of the variables in the equation of the curve approaches infinity.
Origin: 1650–60; < Gk asýmptōtos, equiv. to a-a-6+ sýmptōtos falling together (sym-sym-+ ptōtós falling, deriv. of ptō-, var. s. of píptein to fall + -tos verbid suffix)
(click for larger image in new window) n. A line whose distance to a given curve tends to zero. An asymptote may or may not intersect its associated curve.
[Ultimately from Greek asumptōtos, not intersecting : a-, not; see a-1 + sumptōtos, intersecting (from sumpiptein, sumptō-, to converge : sun-, syn- + piptein, to fall; see pet- in Indo-European roots).] as'ymp·tot'ic (-tŏt'ĭk), as'ymp·tot'i·cal adj., as'ymp·tot'i·cal·ly adv.