1
: an atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more electrons
2
: a charged subatomic particle (such as a free electron)
Ionic
1
a
: act or process
validation
b
: result of an act or process
regulation
2
: state or condition
hydration
Examples of ion in a Sentence
Recent Examples on the Web
Aamir Khollam, Interesting Engineering, 30 Jan. 2026
This means that the snail actively recruits and manages metal ions from its environment for shell formation.
—Scott Travers, Forbes.com, 30 Jan. 2026
The systems use lithium-ion or other battery cells, helping data centers and utilities avoid blackouts, allowing for energy storage from sources like solar and wind.
—Lora Kolodny, CNBC, 29 Jan. 2026
Those ions drag water molecules with them, effectively creating a flowing river around the robot.
—Kurt Knutsson, FOXNews.com, 28 Jan. 2026
See All Example Sentences for ion
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Noun
This improves access for ions and molecules, which matters for batteries and chemical sensing.
—Aamir Khollam, Interesting Engineering, 30 Jan. 2026
This means that the snail actively recruits and manages metal ions from its environment for shell formation.
—Scott Travers, Forbes.com, 30 Jan. 2026
The systems use lithium-ion or other battery cells, helping data centers and utilities avoid blackouts, allowing for energy storage from sources like solar and wind.
—Lora Kolodny, CNBC, 29 Jan. 2026
Those ions drag water molecules with them, effectively creating a flowing river around the robot.
—Kurt Knutsson, FOXNews.com, 28 Jan. 2026
See All Example Sentences for ion
Cite this Entry
“Ion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ion. Accessed 1 Feb. 2026.
Copy CitationKids Definition
ion
1 of 2 noun
ˈī-ən 
ˈī-ˌän
: an atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more electrons
-ion
2 of 2 noun suffix1
a
: act or process
validation
b
: result of an act or process
regulation
2
: state or condition
hydration
Etymology
Noun suffix
derived from Latin -ion (suffix) "act or process"
Love words? Need even more definitions?
Merriam-Webster unabridged
