Ion

/aɪˈɒn/

Meaning & Definition

noun
An atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.
Sodium ions are essential for nerve impulse transmission.
An atom or group of atoms that has a positive or negative charge.
Chloride ions are derived from hydrochloric acid.
In electrochemistry, an ion is any atom or molecule in solution that can conduct electricity.
The presence of hydrogen ions in solution contributes to its acidity.
An ionized particle formed during the ionization process.
The ion produced in the mass spectrometer was detected by the analyzer.
A species that can exist in either a cationic or anionic form.
The ion can exist as a cation or as an anion depending on the surrounding environment.

Etymology

The word 'ion' comes from the Greek 'ion', which means 'going, walking', from the verb 'ienai', meaning 'to go'.

Common Phrases and Expressions

ionic bond:
A type of chemical bond that involves the electrostatic attraction between oppositely charged ions.
positive ion:
An ion with a net positive charge, formed by the loss of one or more electrons.
negative ion:
An ion with a net negative charge, formed by the gain of one or more electrons.

Related Words

Slang Meanings

Used to refer to a powerful energy source or charge.
That party had some serious ion vibes!
An expression to describe something that is very energetic or lively.
This song is so ion, it gets me moving!