asymptote

/หˆeษชฬฏsษชmtoสŠฬฏt/

IPA: /AE1 S AH0 M T OW0 T/

noun
  1. 1

    A straight line which a curve approaches arbitrarily closely, as they go to infinity. The limit of the curve, its tangent "at infinity".

  2. 2

    (by extension) Anything which comes near to but never meets something else.

verb
  1. 1

    To approach, but never quite touch, a straight line, as something goes to infinity.

Source: https://en.wiktionary.org/wiki/asymptote