noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An ellipsoid whose three axes represent the refractive indices of an anisotropic crystal for light following different directions with respect to the crystal axes

Etymology

Learned borrowing from Latin indicātrīx. By surface analysis, indicate + -trix.

Related phrases

Tissot's indicatrixrefractive index

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.