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orthoclastic

American

[awr-thuh-klas-tik] / ˌɔr θəˈklæs tɪk /

adjective

Crystallography.

(of a crystal) having cleavages at right angles to each other.

Etymology

Origin of orthoclastic

1875–80; < German orthoklastisch, equivalent to ortho- ortho- + -klastisch clastic

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.

There are consequently two series of felspars, one termed orthoclastic or orthotomous, and the other plagioclastic or clinotomous.

From Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 2 "Fairbanks, Erastus" to "Fens" by Various

Both plagioclastic and orthoclastic aventurine occur at several localities in the United States.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" by Various

Orthoclase is orthoclastic and monoclinic; all the other feldspars are plagioclastic and triclinic.

From The Student's Elements of Geology by Lyell, Charles, Sir

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023