node
(ʊd)
Random House Webster's College Dictionary
Geom. a point on a curve or surface at which there can be more than one tangent line or tangent plane.
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tangential
(ænˈdʒɛn ʃəl)
Random House Webster's College Dictionary
pertaining to or of the nature of a tangent; being or moving in the direction of a tangent.
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cotangent
(ʊˈtæn dʒənt, ˈkoʊˌtæn-)
Random House Webster's College Dictionary
the tangent of the complement, or the reciprocal of the tangent, of a given angle or arc.
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tangential
Webster Dictionary
of or pertaining to a tangent; in the direction of a tangent
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tractrix
Webster Dictionary
a curve such that the part of the tangent between the point of tangency and a given straight line is constant; -- so called because it was conceived as described by the motion of one end of a tangent line as the other end was drawn along the given line
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normal
(ˈnɔr məl)
Random House Webster's College Dictionary
a perpendicular line or plane, esp. one perpendicular to a tangent line of a curve, or a tangent plane of a surface, at the point of contact.
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tangent
Webster Dictionary
meeting a curve or surface at a point and having at that point the same direction as the curve or surface; -- said of a straight line, curve, or surface; as, a line tangent to a curve; a curve tangent to a surface; tangent surfaces
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tangent
Webster Dictionary
a tangent line curve, or surface; specifically, that portion of the straight line tangent to a curve that is between the point of tangency and a given line, the given line being, for example, the axis of abscissas, or a radius of a circle produced. See Trigonometrical function, under Function
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indicatrix
Webster Dictionary
a certain conic section supposed to be drawn in the tangent plane to any surface, and used to determine the accidents of curvature of the surface at the point of contact. The curve is similar to the intersection of the surface with a parallel to the tangent plane and indefinitely near it. It is an ellipse when the curvature is synclastic, and an hyperbola when the curvature is anticlastic
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envelope
(envelope)
Princeton's WordNet
a curve that is tangent to each of a family of curves
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tangential
(tangential)
Princeton's WordNet
of or relating to or acting along or in the direction of a tangent
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maximum
(maximum)
Princeton's WordNet
the point on a curve where the tangent changes from positive on the left to negative on the right
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minimum
(minimum)
Princeton's WordNet
the point on a curve where the tangent changes from negative on the left to positive on the right
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osculation
(osculation)
Princeton's WordNet
(mathematics) a contact of two curves (or two surfaces) at which they have a common tangent
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tangent plane
(tangent plane)
Princeton's WordNet
the plane that contains all the lines tangent to a specific point on a surface
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asymptote
(asymptote)
Princeton's WordNet
a straight line that is the limiting value of a curve; can be considered as tangent at infinity
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tangency
(tangency)
Princeton's WordNet
the state of being tangent; having contact at a single point or along a line without crossing
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touching
(ˈtʌtʃ ɪŋ)
Random House Webster's College Dictionary
being in contact; tangent.
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touch
(ʌtʃ)
Random House Webster's College Dictionary
(of a line or surface) to be tangent to.
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cusp
(ʌsp)
Random House Webster's College Dictionary
a point where two branches of a curve meet, end, and are tangent.
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touch
Webster Dictionary
to be tangent to. See Tangent, a
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semitangent
Webster Dictionary
the tangent of half an arc
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tangentially
Webster Dictionary
in the direction of a tangent
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envelope
(ˈɛn vəˌloʊp, ˈɑn-)
Random House Webster's College Dictionary
Geom. a curve or surface tangent to each member of a set of curves or surfaces.
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curvature
(ˈkɜr və tʃər, -ˌtʃʊər)
Random House Webster's College Dictionary
(at a point on a curve) the derivative of the inclination of the tangent with respect to arc length.
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tangent
(ˈtæn dʒənt)
Random House Webster's College Dictionary
touching at a single point, as a tangent in relation to a curve or surface.
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slope
(ʊp)
Random House Webster's College Dictionary
the tangent of the angle between a given straight line and the x-axis of a system of Cartesian coordinates.
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cotangent
Webster Dictionary
the tangent of the complement of an arc or angle. See Illust. of Functions
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tangency
Webster Dictionary
the quality or state of being tangent; a contact or touching
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curvature
(curvature)
Princeton's WordNet
the rate of change (at a point) of the angle between a curve and a tangent to the curve
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