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pyritohedron

American  
[pahy-rahy-tuh-hee-druhn, puh-, pahy-rahy-] / paɪˌraɪ təˈhi drən, pə-, ˌpaɪ raɪ- /

noun

Crystallography.

  1. a crystal form of 12 pentagonal faces.

Other Word Forms

  • pyritohedral adjective

Etymology

Origin of pyritohedron

1865–70; pyrito- (combining form of pyrite ) + -hedron

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.

Pyritohedron, pī-rī-tō-hē′dron, n. a pentagonal dodecahedron.—adj.

From Project Gutenberg

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.