1
a
: a minute mineral form (as in glassy volcanic rocks) that marks the beginning of crystallization
b
: a single grain in a polycrystalline substance
2

Examples of crystallite in a Sentence

Recent Examples on the Web
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That’s because electrical charges moving through the material got stuck at the boundaries between the myriad crystallites making up the material. — Robert F. Service, Science | AAAS, 4 June 2019

Word History

Etymology

borrowed from French cristallite, from cristal crystal entry 1 + -ite -ite entry 1

First Known Use

1871, in the meaning defined at sense 1a

Time Traveler
The first known use of crystallite was in 1871

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Cite this Entry

“Crystallite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/crystallite. Accessed 30 Sep. 2026.

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