Definition of trichroic in English:

Share this entry


Pronunciation: /trīˈkrōik/


(Of a crystal) appearing with different colors when viewed along the three crystallographic directions.
Example sentences
  • The trichroic mirror is a thin rectangular wedge 3 by 5 inches in dimension and 0.125 inches thick.
  • Very few stones are trichroic and this is what makes tanzanites very easy to identify.
  • This new trichroic prism assembly is especially useful in a compact color projector employing reflective liquid-crystal light valves.



Pronunciation: /ˈtrīkrəˌwizəm/
Example sentences
  • This colour variation is pleochroism (strictly trichroism in biaxial minerals).
  • Most tanzanite is treated with heat to deepen the primary colors, and this subdues the trichroism slightly.
  • The cutter must orient the rough carefully, taking iolite's trichroism of blue, gray and near colorless into account.


Late 19th century: from Greek trikhroos (from tri- 'three' + khrōs 'color') + -ic.

For editors and proofreaders

Syllabification: tri·chro·ic

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.