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English to English noun
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a straight line that is the limiting value of a curve; can be considered as tangent at infinity |  | Example: the asymptote of the curve
source: wordnet30
| 2 |
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. |  | source: webster1913
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