noun
solid solution
Technical term in chemistry and materials science for a solid mixture where one component is uniformly dispersed in another at the atomic or molecular level.
合金は金属の固溶体の一種である。
An alloy is a type of solid solution of metals.
このセラミックスは固溶体を形成しやすい。
This ceramic readily forms a solid solution.
混晶 is a mixed crystal, a type of solid solution where the components are crystallographically similar; 固溶体 is the more general term.
Compound of 固 (solid) + 溶 (dissolve) + 体 (body), a calque from English 'solid solution' or German 'feste Lösung'.