noun-modifying (irregular)
amorphous; non-crystalline
Technical term used in materials science and solid-state physics to describe solids lacking long-range atomic order. Often used prenominally (e.g., 非結晶性物質).
See also: 多結晶性
Amorphous solids do not have the regular structure of crystals.
This material is amorphous and shows no distinct peaks in X-ray diffraction.
結晶性 means 'crystalline', the opposite of 非結晶性.
多結晶性 means 'polycrystalline', referring to materials composed of many small crystals, distinct from the completely disordered amorphous state.
Compound of 非 (non-) + 結晶 (crystal) + 性 (-ity, -ness). A straightforward technical coinage.