orthotomicadj.

1857 A. Cayley in Q. Jrnl. Math. 1 242 The circle cutting at right angles the three given circles, or, as it may be called, the orthotomic circle.

1863 R. Townsend Chapters on Mod. Geom. I. 17 Any..two figures intersecting at right angles, are said..to be orthotomic.

1922 Amer. Math. Monthly 29 348 When an equilateral hyperbola is inverted about a point not on it, the transform is a bicircular quartic with a singular point at the center of inversion and the tangents there are at right angles (for they are parallel to the asymptotes of the conic). Thus the quartic is orthotomic.

1974 Physics Bull. Mar. 103/2 The contents, arranged in 16 chapters, cover the calculus of variations, space curves, the Hilbert integral, generalized ray tracing, orthotomic systems of rays.

1995 Computer-Aided Design 27 529/1 An orthotomic curve has a singularity if and only if the curve from which it is created has an inflection.