asymptote

n. 渐近线
【电】 渐近线

副词:asymptotically 形容词:asymptotic 

as.ymp.tote

n.Mathematics （名词）【数学】
A line considered a limit to a curve in the sense that the perpendicular distance from a moving point on the curve to the line approaches zero as the point moves an infinite distance from the origin.
渐近线：与曲线极限相关的一条直线，当曲线上某动点沿该曲线的一个分支移向无穷远时，动点到该直线的垂直距离趋于零

来源：
Ultimately from Greek asumptôtos [not intersecting]
最终源自 希腊语 asumptôtos [非横切]
a- [not] * see a-
a- [非…] *参见 a-
sumptôtos [intersecting] from sumpiptein [to converge] sun- [syn-] piptein ptô- [to fall] * see pet-
sumptôtos [横切] 源自 sumpiptein [收敛，集聚] sun- [前缀，表示.同时.] piptein ptô- [落下] *参见 pet-

【引伸】
as.ymptot.ic

as.ymptot.ically
adv.（副词）