1. vb. [Drilling Fluids]

To disperse a substance into a colloidal form or to disperse a clay in water to form a colloidal suspension.

See related terms: clay extender,  clay-water interaction,  colloid,  ion exchange,  low-solids mud,  low-solids, nondispersed mud,  montmorillonite,  peptization,  peptized clay,  peptizing agent