pinacoid
Americannoun
Other Word Forms
- pinacoidal adjective
Etymology
Origin of pinacoid
1875–80; < Greek pinak- (stem of pínax ) slab, board + -oid
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.
All the forms, except the prisms and basal pinacoid, are sphenoids.
From Project Gutenberg
All the closed forms are hexagonal bipyramids; the open forms are hexagonal prisms or the basal pinacoid.
From Project Gutenberg
There is an imperfect cleavage parallel to the basal pinacoid, and the fracture is conchoidal.
From Project Gutenberg
Acute rhombohedra in combination with the basal pinacoid are also frequent, giving crystals of octahedral aspect.
From Project Gutenberg
The cleavage is perfect parallel to the basal pinacoid, and less marked parallel to the prism.
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.
