multicomponent particle

synonyms: composite particle, structured particle
https://doi.org/10.1351/goldbook.14298
Inhomogeneous particle consisting of two or more immiscible components.
multicomponent particle

Examples of two-phase particle morphology.

Notes:
  1. The components can be solid, liquid, or gaseous.
  2. Multicomponent particles are often obtained by sequential polymerizations of different monomers or monomer mixtures.
Source:
PAC, 2011, 83, 2229. (Terminology of polymers and polymerization processes in dispersed systems (IUPAC Recommendations 2011)) on page 2234 [Terms] [Paper]