IPA: /ˌæsɪmˈtɒtɪk/
KK: /æˌsɪmpˈtɒtɪk/
Relating to a line that a curve approaches as it heads towards infinity, but never actually touches.
The function has an asymptotic behavior as it approaches the value of zero.
Asymptotic → It is formed from "a-" (meaning not) and "symptote" (from Greek "symptōtikos", meaning falling together). The word describes a line that a curve approaches but never touches, hence not falling together with it.
Think of 'not' ('a-') touching or meeting something that is 'falling together' ('symptote'). This helps you remember that 'asymptotic' refers to something that approaches a limit but never actually reaches it.