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tetragonal

[te-trag-uh-nl]
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adjective
  1. pertaining to or having the form of a tetragon.
  2. Crystallography. noting or pertaining to a system of crystallization in which all three axes are at right angles to one another, two being equal in length and the third being of a different length.

Origin of tetragonal

First recorded in 1565–75; tetragon + -al1
Related formste·trag·o·nal·ly, adverbte·trag·o·nal·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for tetragonal

tetragonal

adjective
  1. Also: dimetric crystallog relating or belonging to the crystal system characterized by three mutually perpendicular axes of which only two are equal
  2. of, relating to, or shaped like a quadrilateral
Derived Formstetragonally, adverbtetragonalness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

tetragonal in Science

tetragonal

[tĕ-trăgə-nəl]
  1. Relating to a crystal having three axes, two of which are of the same length and are at right angles to each other. The third axis is perpendicular to these. The mineral zircon has tetragonal crystals. See illustration at crystal.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.