See Also: indicatrix(medicine)
indicatrix(dictionary)

indicatrix (iou)



indicatrix noun. . M19.
[mod. Latin, fem. of Latin INDICATOR: see -TRIX.]
Geometry. The curve in which a surface is cut by a plane close and parallel to the tangent plane at a point, indicating the nature of the curvature at that point. rare. M19.
Crystallography. An imaginary ellipsoidal surface whose axes represent the refractive indices of a crystal. Also optical indicatrix. L19.