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anionic
This term is used almost exclusively within the fields of chemistry, biochemistry, and materials science. It describes a specific electrical charge state, specifically a negative charge, and is most frequently encountered when discussing surfactants, polymers, or ion-exchange resins.
In a practical industrial context, "anionic" is often contrasted with "cationic" (positively charged) or "nonionic" (neutral). For example, anionic surfactants are common in soaps and detergents because their negative charge allows them to effectively bind to positively charged dirt particles to lift them away from a surface.
Meanings
Examples
Most common household soaps are anionic surfactants.
The researcher noted that the anionic charge helps the molecule bind to the surface.
We need to use an anionic resin for this specific water purification process.
The protein was separated based on its anionic properties during electrophoresis.
I wonder if an anionic polymer would be more stable in this environment.
Anionic detergents are highly effective at removing oily stains from fabric.