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# ex

noun (an ex, exes; informal); prefix (ex-); preposition (ex, Latin)

«ex» 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. (informal) A person's former husband, wife, girlfriend or boyfriend: «my mum's ex». [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/ex/#m1)
2. As a prefix «ex-», it means «former» or «no longer»: ex-teacher, ex-president, ex-wife. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/ex/#m2)
3. (money, formal) «ex» means «without»: «ex VAT» means without the tax. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/ex/#m3)
4. The letter X. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/ex/#m4)

### In the lessons

In adult life, after a divorce or break-up, people call their former partner «my ex». In news and stories «ex-» shows who someone used to be. In maths, «x» (said «ex») is often the unknown number. Phrases: «my ex», «his ex-wife», «ex-pupil», «ex-boyfriend».

### Examples

- Dad still gets on well with his ex. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/ex/#x1)
- My aunt's ex came to the party. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/ex/#x2)
- Mr Lee is an ex-soldier. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/ex/#x3)
- She is an ex-pupil of our school. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/ex/#x4)
- The ex-champion now trains young swimmers. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/ex/#x5)
- In the sum 3 + x = 7, «ex» stands for 4. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/ex/#x6)

### Note

Informal as a noun; plural exes. As a prefix it needs a hyphen: ex-wife. Trap: do not confuse with «x» the letter used in algebra, which sounds the same. Sensitive word in family talk.

## In Jewish tradition

Here "ex." is short for "example", and "ex-" starts a word such as "express" or "explained". In the primary lessons: In adult life, after a divorce or break-up, people call their former partner «my ex». In news and stories «ex-» shows who someone used to be. In maths, «x» (said «ex») is often the unknown number. Phrases: «my ex», «his ex-wife», «ex-pupil», «ex-boyfriend».

### Examples

- Depth \[note 15: עוֹמֶק ʽomeq ‘depth’ here is based on the metaphor of עֲמֻקָּה ʽamuqqah ‘deepness’ as a symbol of divine mystery, as found in Biblical poetry, ex. \[Job 11:8\], \[Psalms 64:7\], \[Ecclesiastes 7:24\]. (Sefer Yetzirah, Sefaria community translation) [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/judaism/E/ex/#x1)
- The numeral system of tlie Sefer Tetzirah, as I have ex- plained, may be considered to consist of live symbols, \|, \|\|, III, nil, 0, the cipher being the fifth symbol. (Mordell, The Origin of Letters and Numerals according to Sefer Yetzirah (1914)) [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/judaism/E/ex/#x2)
- As, according to the Sefer Yctzirah, it is possible to ex- press all numbers by the ten Sefirot"\*), we must demonstrate liow all numbers, even those higher tiian nine, may be indi- cated by the ten strokes. (Mordell, The Origin of Letters and Numerals according to Sefer Yetzirah (1914)) [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/judaism/E/ex/#x3)

### Note

Informal as a noun; plural exes. As a prefix it needs a hyphen: ex-wife. Trap: do not confuse with «x» the letter used in algebra, which sounds the same. Sensitive word in family talk.

## On Mova

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