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pleochroic

American  
[plee-uh-kroh-ik] / ˌpli əˈkroʊ ɪk /

adjective

  1. (of a biaxial crystal) characterized by pleochroism.


Etymology

Origin of pleochroic

First recorded in 1860–65; pleo- + -chroic

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Such an effect is called pleochroism, and crystals which show variations in their colour when viewed from different angles, or by transmitted light, are called pleochroic, or pleochromatic—from two Greek words signifying "to colour more."

From The Chemistry, Properties and Tests of Precious Stones by Mastin, John

The pleochroism is strong, the pleochroic colours being usually green, yellow and brown.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6 "English Language" to "Epsom Salts" by Various

“Tourmaline hornfelses” are found sometimes near the margins of tourmaline granites; they are black with small needles of schorl which under the microscope are dark brown and richly pleochroic.

From Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 6 "Home, Daniel" to "Hortensius, Quintus" by Various

When polarized light is passed through a transparent plate of a pleochroic mineral, the colour will vary with the direction in which the light-vibrations take place.

From The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde by Various

A special feature, recurring in many members of the group, is the presence of strongly pleochroic, reddish or green hypersthene.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 8 "Chariot" to "Chatelaine" by Various