Origin

*ortho-* + Ancient Greek meaning "to cleave".

Origin

*ortho-* + Ancient Greek meaning "to cleave".

English Wiktionary. Available under CC-BY-SA license.

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**MLA Style**

"orthotomic." YourDictionary, n.d. Web. 15 October 2018. <http://www.yourdictionary.com/orthotomic>.

**APA Style**

orthotomic. (n.d.). Retrieved October 15th, 2018, from http://www.yourdictionary.com/orthotomic

- That there exists a point such that the tangents from this point to the four spheres are equal, and that with this point as centre, and the length of the tangent as radius, a sphere may be described which cuts, the four spheres at right angles; this "
**orthotomic**" sphere corresponds to the orthogonal circle of a system of circles. - Secondary caustics are
**orthotomic**curves having the reflected or refracted rays as normals, and consequently the proper caustic curve, being the envelope of the normals, is their evolute.

- orthotomic
- orthotomous
- orthotomus
- orthotomy