asymptote
n. தொடர்வரை, வளைகோட்டுடன் இணையாறுஅணுகிக்கொண்டே செல்லும் நேர்க்கோடு.
As"ymp*tote, n. Etym: [Gr. Symptom.] (Math.) Defn: 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.