# expand

## EnglishEdit

### EtymologyEdit

Recorded in Middle English since 1422, from Anglo-Norman espaundre, from Latin expandere present active infinitive of expandō (to spread out), itself from ex- (out, outwards) + pandō (to spread).

### VerbEdit

expand (third-person singular simple present expands, present participle expanding, simple past and past participle expanded)

1. (transitive) To change (something) from a smaller form and/or size to a larger one.
You can expand this compact umbrella to cover a large table.
2. (transitive) To increase the extent, number, volume or scope of (something).
A flower expands its leaves.
• Milton
Then with expanded wings he steers his flight.
3. (transitive) To express (something) at length and/or in detail.
4. (transitive, algebra) To rewrite (an expression) as a longer, yet equivalent sum of terms.
Use the binomial theorem to expand ${(x+1)}^4$ to $x^4 + 4x^3 + 6x^2 + 4x + 1$
5. (intransitive) To (be) change(d) from a smaller form/size to a larger one.
Many materials expand when heated.
This compact umbrella expands to cover a large table.
6. (intransitive) To (be) increase(d) in extent, number, volume or scope.
7. (intransitive) To speak or write at length or in detail.
He's so pedantic, he expands on everything!
8. (intransitive) To feel generous or optimistic.

#### SynonymsEdit

• (to change from a smaller form/size to a larger one): open out, spread, spread out, unfold
• (to increase the extent, number, volume or scope of): enlarge
• (to express at length or in detail): elaborate (on), expand on

#### AntonymsEdit

• (to change from a smaller form/size to a larger one): contract
• (to increase the extent, number, volume or scope of): contract
• (algebra: to rewrite as an equivalent sum of terms): factor

#### TranslationsEdit

The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.

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Last modified on 8 December 2013, at 12:50
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