polycrystalline polymer

https://doi.org/10.1351/goldbook.14252
Crystalline polymer in which a large number of polymer crystallites coexist.
Note: Polymer crystallites and amorphous domains in a specimen may be organized randomly or with some degree of order.
Examples: Ordered or partially ordered polycrystalline polymers are polymer fibers, spherulites, and multilayer aggregates.
Source:
PAC, 2011, 83, 1831. (Definitions of terms relating to crystalline polymers (IUPAC Recommendations 2011)) on page 1856 [Terms] [Paper]