ion.

An atom or molecule with a net electric charge because it has gained or lost electrons.

Use it for

Words that belong together

• positive ion
• ion beam

On the page

The detector registered a surge of ions near the damaged conduit.

Usage notes

Primary category: sci-fi. Forms: Singular ion; plural ions. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Commonness: moderately common.