[Elamur Dictionary](https://md.dictionary.elamur.ai/free/en/) · [this page in HTML](https://dictionary.elamur.ai/free/en/english/ion/)

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# ion

noun (an ion, ions)

«ion» in the English dictionary: everyday and in Jewish tradition — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. (science) An atom or a small group of atoms that has an electric charge because it has gained or lost one or more electrons. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/ion/#m1)
2. A positive ion has lost electrons; a negative ion has gained electrons. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/ion/#m2)
3. Ion is also a boy's name, as in old Greek stories. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/ion/#m3)

### In the lessons

In science lessons ions explain how salt dissolves in water, how batteries work and why salty water conducts electricity. In everyday adverts you hear about «lithium-ion batteries» in phones and laptops. Phrases: positive ion, negative ion, lithium-ion battery, sodium ion.

### Examples

- Salt is made of sodium ions and chloride ions. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/ion/#x1)
- A lithium-ion battery powers my tablet. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/ion/#x2)
- An ion has an electric charge. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/ion/#x3)
- When an atom loses an electron, it becomes a positive ion. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/ion/#x4)
- Salty water conducts electricity because it contains ions. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/ion/#x5)
- Our science teacher drew the ions as little circles with plus and minus signs. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/ion/#x6)
- Some air purifiers claim to release negative ions. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/ion/#x7)
- Ion's suspicions at once fell upon the obsequious servant of Creusa, who with such officious attention had filled his cup. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/ion/#x8)

### Note

Countable: an ion, ions; «an», because it begins with a vowel sound. Pronounced EYE-on (two syllables). The word is also a suffix in many words (-ion: action, creation), but alone it is the science word. Claims that «negative ions» make you healthier are mostly advertising, not proven science.

## In Jewish tradition

In science lessons ions explain how salt dissolves in water, how batteries work and why salty water conducts electricity. In everyday adverts you hear about «lithium-ion batteries» in phones and laptops. Phrases: positive ion, negative ion, lithium-ion battery, sodium ion.

### Note

Countable: an ion, ions; «an», because it begins with a vowel sound. Pronounced EYE-on (two syllables). The word is also a suffix in many words (-ion: action, creation), but alone it is the science word. Claims that «negative ions» make you healthier are mostly advertising, not proven science.

## On Mova

- [Trees and pragmatics of «ion» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/ion/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«ion» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/ion.html) on Mova free.
- [Trees and pragmatics of «ion» in the Judaism dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/judaism/I/ion/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«ion» in the Judaism dictionary](https://mova.elamur.ai/free/en/dictionaries/judaism/w/ion.html) on Mova free.