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microcrystalline

American  
[mahy-kroh-kris-tl-in, -ahyn-] / ˌmaɪ kroʊˈkrɪs tl ɪn, -ˌaɪn- /

adjective

  1. minutely crystalline; composed of microscopic crystals.


microcrystalline British  
/ ˌmaɪkrəʊˈkrɪstəˌlaɪn /

adjective

  1. (of a solid) composed of microscopic crystals

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

microcrystalline Scientific  
/ mī′krō-krĭstə-lĭn /
  1. Having a crystalline structure visible only under a microscope.


Other Word Forms

  • microcrystallinity noun

Etymology

Origin of microcrystalline

First recorded in 1875–80; micro- + crystalline

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.

Her contribution — five modeled microcrystalline wax sculptures of sleeping toddlers — appears beside three paintings from the 1960s by her mother, Carmen de Monteflores, who is now 92.

From Los Angeles Times • Mar. 10, 2026

In the pre-show room of the ride, look for a solid microcrystalline silicon billet, ancient silicon wafer chips, vintage cartridge casings for hard drive disks and microscopes.

From Los Angeles Times • Jun. 15, 2021

Photochromic lenses are embedded with organic microcrystalline molecules that change their properties when exposed to UV in sunlight, but become clear in artificial lighting with no UV.

From Textbooks • Aug. 12, 2015

You can walk in the door and get some advisement along with the microcrystalline wax you need.”

From New York Times • Sep. 9, 2011

They are common constituents of microcrystalline igneous rocks, and often occur as inclusions in larger crystals of other substances.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various