Go to 'thermo-' entry Go to 'dino-' entry Go to 'chondro-' entry Go to 'aero-' entry Go to '-logy' entry Go to 'thaumato-' entry Go to 'nano-' entry Go to '-sophy' entry Go to 'bucco-' entry Go to '-ism' entry Go to '-lysis' entry Go to 'galacto-' entry Go to '-anthropy' entry Go to 'pneumo-' entry Go to '-ploitation' entry Go to '-lithic' entry Go to '-sepalous' entry Go to 'onco-' entry Go to '-parous' entry Go to 'dermato-' entry Go to 'multi-' entry Go to 'dodeca-' entry Go to '-zoon' entry Go to 'vermi-' entry Go to 'crystallo-' entry Go to 'biblio-' entry Go to 'eco-' entry Go to 'juxta-' entry Go to 'facio-' entry
Affixes: the building blocks of English
Affixes: the building blocks of English

-clase

Minerals showing characteristic cleavage.

[Greek klasis, breaking.]

Orthoclase (Greek orthos, straight) is a common rock-forming feldspar mineral that has two characteristic cleavages at right angles; plagioclase (Greek plagios, slanting) is a white form of feldspar, also common in rocks, having two cleavages at an oblique angle; periclase (Greek peri, utterly) is a colourless mineral occurring chiefly in marble and limestone, so named because it cleaves perfectly; euclase (Greek eu, well) is a brittle mineral sometimes valued as a gemstone.

Visit Michael Quinion’s World Wide Words site for 2000+ articles on English!

Copyright © Michael Quinion 2008–. All rights reserved. Page last updated 23 September 2008.
Your comments and suggestions on the site are very welcome.