adjective Crystallography.

noting or pertaining to a system of crystallization in which the three axes are unequal and intersect at oblique angles.

Origin of triclinic

1850–55; tri- + Greek klī́n(ein) to lean1, slope + -ic Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for triclinic

Historical Examples of triclinic

  • They are triclinic, with cleavages meeting at approximately 86 degrees.


    William J. Miller

  • This is a soda Feldspar and is triclinic, but exhibits the color characteristic of moonstone.

  • All the sodium, sodium-calcium, and calcium species are triclinic, except the rare monoclinic sodium felspar barbierite.

  • In the triclinic system there are three unequal axes and these intersections are all oblique.

    The A B C of Mining

    Charles A. Bramble

British Dictionary definitions for triclinic



relating to or belonging to the crystal system characterized by three unequal axes, no pair of which are perpendicularAlso: anorthic
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

triclinic in Science



Relating to a crystal having three axes of different lengths intersecting at oblique angles. The mineral microcline (a type of feldspar) has triclinic crystals. See illustration at crystal.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.