Ion Meaning
/ˈaɪən/Definition, CEFR level C1, pronunciation, examples, and quiz.
Listen pronunciation
Definition
nounAn atom or group of atoms bearing an electrical charge, such as the sodium and chlorine atoms in a salt solution.
phraseI don't.
Sentence Examples
This spacecraft is powered by ion thrusters.
An ion is an atom or molecule with a net electric charge.
Lithium ion batteries are used in almost all electric vehicles.
CEFR Practice Quiz
A charged particle called an ____ is formed when an atom loses or gains electrons.
CEFR Practice Quiz (Alternate)
An ____ is an atom or molecule that has a total electrical charge due to the loss or gain of electrons.
Word Origin & History
From the ending of anion and cation, which in turn is from Ancient Greek ἰόν (ión, “going”), neuter present participle of εἶμι (eîmi, “I go”). Coined by English polymath William Whewell in 1834 for Michael Faraday, who introduced it later that year.
Explore More C1 Vocabulary Words
CEFR Practice Quiz
A charged particle called an ____ is formed when an atom loses or gains electrons.
CEFR Practice Quiz (Alternate)
An ____ is an atom or molecule that has a total electrical charge due to the loss or gain of electrons.