ScienceAugust 5, 2026
polysilicon
pol-ee-SIL-ih-kun
Definition
A high-purity form of silicon, used primarily as a raw material in the manufacturing of solar cells and semiconductor devices.
Etymology
Derived from the Greek 'poly-' (many) and 'silicon,' referring to the material's polycrystalline structure, where it consists of many small silicon crystals rather than a single large one.
In the news
The article references polysilicon in a headline regarding U.S. trade policies, highlighting its role as a critical industrial material subject to new import tariffs.
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