colloid medical definition

1. A suspension of finely divided particles in a continuous medium from which the particles do not settle out rapidly and are not readily filtered.
2. The particulate matter so suspended.
3. The gelatinous stored secretion of the thyroid gland, consisting mainly of thyroglobulin.
4. Gelatinous material resulting from colloid degeneration in diseased tissue. Also called colloidin.

Related Forms:

• colloidal adjective