noun which may take the genitive case particle 'no'
heterogeneous; uneven in quality; non-uniform
Describes something that is not uniform in composition, quality, or character. Often used in technical or formal contexts.
この材料は不均質で、場所によって強度が違う。
This material is heterogeneous, and its strength varies from place to place.
不均質なデータを扱うのは難しい。
It is difficult to handle non-uniform data.
Also means 'uneven' or 'non-uniform', but 不均質 emphasizes difference in quality or composition, while 不均一 can refer to any kind of unevenness.
Compound of 不 (fu, 'not') + 均質 (kinshitsu, 'homogeneous'). 均質 itself is from 均 (kin, 'equal') + 質 (shitsu, 'quality').