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
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Word of the Day
26 June 2024
INCORPORATE
(verb) include or contain; have as a component; “A totally new idea is comprised in this paper”; “The record contains many old songs from the 1930’s”
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