Definition of polycrystalline in English:

polycrystalline

Syllabification: pol·y·crys·tal·line
Pronunciation: /ˌpäliˈkristələn, -ˌlīn, -ˌlēn
 
/

adjective

  • (Of a metal or other solid) consisting of many crystalline parts that are randomly oriented with respect to each other.
    More example sentences
    • In a polycrystalline metal the crack may extend for only a few grain diameters before the crack propagation changes to stage II.
    • These older style panels are made of crystalline or polycrystalline silicon modules.
    • The yield stress of iron single crystals are very sensitive to both temperature and strain rate and a similar dependence has been found for less pure polycrystalline iron.

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Pronunciation: meɪdʒ
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a magician or learned person