bisectrix

American  

[bahy-sek-triks] / baɪˈsɛk trɪks /

noun

plural

bisectrices

1. Crystallography. an imaginary line bisecting either the acute angle acute bisectrix or the obtuse angle obtuse bisectrix of the optic axes of a biaxial crystal.

2. Geometry. a bisector.

---

bisectrix British  

/ baɪˈsɛktrɪks /

noun

1. another name for bisector

2. the bisector of the angle between the optic axes of a crystal

---

Etymology

Origin of bisectrix

First recorded in 1850–55; bisec(t) + -trix

Example Sentences

The optical orientation of an orthorhombic crystal is completely defined by stating to which crystallographic planes the optic axial plane and the acute bisectrix are respectively parallel and perpendicular.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various

A beginning was made by firing four shots at each plate in the bisectrix of the corners.

From Scientific American Supplement, No. 794, March 21, 1891 by Various

The two minerals may, however, be readily distinguished by the fact that in heulandite the acute positive bisectrix of the optic axes emerges perpendicular to the cleavage.

From Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4 "Hero" to "Hindu Chronology" by Various