bisectrix

English

Noun

bisectrix (plural bisectrixes or bisectrices)

1. (crystallography) The line bisecting the angle between the optic axes of a biaxial crystal.

References

• “bisectrix, n.”, in OED Online ⁠, Oxford: Oxford University Press, launched 2000.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “bisectrix”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)

Latin

Etymology

From bi- +‎ secō +‎ -trīx. Coined in New Latin as a feminine agent noun corresponding to the masculine bisector.

Pronunciation

• (Classical Latin) IPA^(key): [bɪˈsɛk.triːks]
• (modern Italianate Ecclesiastical) IPA^(key): [biˈs̬ɛk.triks]

Noun

bisectrīx f (genitive bisectrīcis); third declension

1. (New Latin, geometry) bisector; a line or plane that bisects an angle or line segment.
   • 1825, C. F. A. Jacobi, De triangulorum rectilineorum proprietatibus, Berlin: Typis A. W. Schadii, page 3:

     Sint AP, BQ, CR bisectrices angulorum A, B, C, et AQ', BR', CP' bisectrices angulorum externorum.

     Let AP, BQ, CR be the bisectors of angles A, B, C, and [let] AQ', BR', CP' [be] the bisectors of the external angles.

Declension

Third-declension noun.

	singular	plural
nominative	bisectrīx	bisectrīcēs
genitive	bisectrīcis	bisectrīcum
dative	bisectrīcī	bisectrīcibus
accusative	bisectrīcem	bisectrīcēs
ablative	bisectrīce	bisectrīcibus
vocative	bisectrīx	bisectrīcēs

Related terms

• bisector