IPA: /ˈæs.ɪm.təʊt/
KK: /ˈæsɪmˌtoʊt/
A line that gets closer and closer to a curve but never actually touches it, even as the curve extends infinitely.
In mathematics, an asymptote is used to describe the behavior of a curve as it approaches a line.
Asymptote → It is formed from "a-" (meaning not) and "symptōtikos" (from Greek, meaning falling together). The word describes a line that does not meet or touch a curve, hence it is 'not falling together' with the curve.
Think of a line that is 'not' ('a-') meeting or 'falling together' ('symptōtikos') with a curve — that's what an asymptote represents.