Meanings
nounpinacoid (plural pinacoids)
plural pinacoids
- chemistryThe face of a crystal parallel to two of the axes.
The crystallographic symmetry is initially broken toward dilation symmetry by the splitting of the basal pinacoid or the pseudohexagonal bipyramidal faces of the growing crystal core.
2009 January 16, Juan Manuel Garcia-Ruiz et al., “Morphogenesis of Self-Assembled Nanocrystalline Materials of Barium Carbonate and Silica”, in Science, volume 323, number 5912
Origin
- Ancient Greekπινάκιον“slab, tablet”
- Englishpinacoid
Ancient Greek πινάκιον (pinákion, “slab, tablet”) + -oid.
More words from Ancient Greek
Full word history & related roots →Rhymes & wordplay
Anagrams
Cite this entry
APA
pinacoid. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/pinacoid
MLA
“pinacoid.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/pinacoid. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “pinacoid,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/pinacoid.
Source: pinacoid on Wiktionary, CC BY-SA 4.0.