nanocrystalline
/ˌnanə(ʊ)ˈkrɪstəlʌɪn/ /ˌnanə(ʊ)ˈkrɪst(ə)lʌɪn/Materials Sci.
adjective
Composed of crystalline grains with dimensions of a few nanometres; specifically designating a nanophase material.
Origin
1980s; earliest use found in Physics Letters. From nano- + crystalline, after nanocrystal.