1. n. [Drilling Fluids]

A compound whose electrons are not shared equally in chemical bonds. A polar compound is not necessarily ionized. Water is a polar compound. Polymers can have ionizing polar groups on their complex structures.

See: anion,  asphaltic mud additive,  cation,  clay,  clay extender,  deflocculant,  polyelectrolyte,  polymer,  salt,  sulfonated polystyrene-maleic anhydride copolymer