polycrystalline

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polycrystalline

[¦päl·i′krist·əl·ən]
(materials)
Pertaining to a material composed of aggregates of individual crystals.
Characterized by variously oriented crystals.

polycrystalline

Many crystals. Polycrystalline structures are composed of many different crystals. Contrast with monocrystalline. See crystalline and polysilicon.