ionize

This is a technical term used primarily in scientific, academic, and industrial contexts. It is rarely used in casual conversation unless the speaker is discussing chemistry, physics, or specific technologies like air filtration and plasma physics.

In a transitive sense, it describes the action of an external force (like radiation or electricity) causing a change in an atom. In an intransitive sense, it describes the process of the substance itself undergoing that change.

While "ionize" is the precise scientific term, in consumer marketing for products like "ionizing air purifiers," the term is often used to imply a cleaning or refreshing effect, though the underlying process remains the same chemical conversion of neutral molecules into charged ions.