crys·tal·lite

[kris-tl-ahyt]
noun Mineralogy.
a minute body in glassy igneous rock, showing incipient crystallization.

Origin:
1795–1805; crystall- + -ite1

crys·tal·lit·ic [kris-tl-it-ik] , adjective
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
crystallite (ˈkrɪstəˌlaɪt) [Click for IPA pronunciation guide]
 
n
any of the minute rudimentary or imperfect crystals occurring in many glassy rocks
 
crystallitic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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00:10
Crystallite is always a great word to know.
So is quincunx. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a stew of meat, vegetables, potatoes, etc.
Encyclopedia Britannica
Encyclopedia

crystallite

any of a type of microscopic body occurring in such glassy igneous rocks as obsidian and pitchstone. Crystallites are regarded as incipient or embryonic crystals, though they often have no recognizable crystallographic form and are too small to polarize light. They occur when magma (molten rock material) congeals so rapidly that crystallization remains incomplete. Crystallites are distinguished from microlites, which are slightly larger forms recognizable as mineral species

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Thus, the accuracy of the measurement is limited by the number of particles as discussed in the section on crystallite statistics.
Stoichiometry per molar ratio as determined by crystallite formation.
Their results suggest that the conventional impregnation method leads to crystallite decoration and thus lower activity.
Crystallite shape can be determined by measuring crystallite size in several different crystallographic directions.
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