INDICATRIX

In`di*ca"trix, n. Etym: [NL.] (Geom. of Three Dimensions)

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

8 November 2024

REPLACEMENT

(noun) the act of furnishing an equivalent person or thing in the place of another; “replacing the star will not be easy”


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