subtangent

subtangent

[suhb-tan-juhnt]
noun Geometry.
the part of the x-axis cut off between the ordinate of a given point of a curve and the tangent at that point.

Origin:
1705–15; sub- + tangent

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World English Dictionary
subtangent (sʌbˈtændʒənt)
 
n
geometry a segment of the x-axis lying between the x-coordinate of the point at which a tangent is drawn to a curve and the intercept of the tangent with the axis

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