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orthoclastic

[awr-thuh-klas-tik]
adjective Crystallography.
  1. (of a crystal) having cleavages at right angles to each other.
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Origin of orthoclastic

1875–80; < German orthoklastisch, equivalent to ortho- ortho- + -klastisch clastic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018