Three-dimensional biocompatible materials formed by cross-linking a hydrophilic polymeric component (e.g., HYDROGELS). They are typically spherical particles in a size range of 20-250 nm when used for drug delivery applications.

Synonyms: Nanocomposite Hydrogel, 0, Nanogels, Hydrogel, Nanocomposite, Nanocomposite Hydrogels, Nanocomposite Gels, Gel, Nanocomposite, Nanocomposite Gel