Dictionary
polycrystalline
adjective poly·crys·tal·line \-ˈkris-tə-lən\
Definition of POLYCRYSTALLINE
1
: consisting of crystals variously oriented
2
: composed of more than one crystal
— poly·crys·tal \ˈpä-lē-ˌkris-təl\ noun
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First Known Use of POLYCRYSTALLINE
1918
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