poly·crys·tal·line
ˌpä-lē-ˈkri-stə-lən 
1
: consisting of crystals variously oriented
2
: composed of more than one crystal
: a polycrystalline body or object
Examples of polycrystalline in a Sentence
Recent Examples on the Web
Neetika Walter, Interesting Engineering, 17 Apr. 2026
In that scheme, nanometers-thick layers of polycrystalline diamond would be integrated within the dielectric layers above the transistors to spread heat.
—IEEE Spectrum, 20 Oct. 2025
Usually in polycrystalline diamond layers, the crystals are oriented vertically and not so good at moving heat horizontally, which is the major requirement in chips, because chips are flat and wide.
—Amos Zeeberg, New York Times, 8 Oct. 2025
There are currently three main types of panels in today’s market which includes monocrystalline, polycrystalline and thin film panels.
—Dianne Plummer, Forbes.com, 22 Aug. 2025
This is often called polycrystalline silicon, in contrast to the monocrystalline (single crystals) wafers that semiconductors are made on.
—Willy Shih, Forbes, 13 Oct. 2024
The polycrystalline top and plastic stake are waterproof and heat resistant to hold up to rain, frost, heat, and more weather conditions.
—Lauren Taylor, Southern Living, 13 May 2024
The Carrera Plasma Diamant D’Avant-Garde, a chronograph with a tourbillon, is loaded with 124 diamonds that are recessed into the case, bezel, and bracelet in multiple geometries, as well as forming the winding crown, indexes, and the polycrystalline diamond slab that is the dial.
—WIRED, 29 Mar. 2023
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Adjective
However, most existing versions are polycrystalline, which creates resistance at grain boundaries and limits how efficiently ions can move through the material.
—Neetika Walter, Interesting Engineering, 17 Apr. 2026
In that scheme, nanometers-thick layers of polycrystalline diamond would be integrated within the dielectric layers above the transistors to spread heat.
—IEEE Spectrum, 20 Oct. 2025
Usually in polycrystalline diamond layers, the crystals are oriented vertically and not so good at moving heat horizontally, which is the major requirement in chips, because chips are flat and wide.
—Amos Zeeberg, New York Times, 8 Oct. 2025
There are currently three main types of panels in today’s market which includes monocrystalline, polycrystalline and thin film panels.
—Dianne Plummer, Forbes.com, 22 Aug. 2025
This is often called polycrystalline silicon, in contrast to the monocrystalline (single crystals) wafers that semiconductors are made on.
—Willy Shih, Forbes, 13 Oct. 2024
The polycrystalline top and plastic stake are waterproof and heat resistant to hold up to rain, frost, heat, and more weather conditions.
—Lauren Taylor, Southern Living, 13 May 2024
The Carrera Plasma Diamant D’Avant-Garde, a chronograph with a tourbillon, is loaded with 124 diamonds that are recessed into the case, bezel, and bracelet in multiple geometries, as well as forming the winding crown, indexes, and the polycrystalline diamond slab that is the dial.
—WIRED, 29 Mar. 2023
Cite this Entry
“Polycrystalline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polycrystalline. Accessed 18 Jun. 2026.
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