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expansion

expansion

10 5.7
In math, a way to write an expression as a sum of parts
  • noun
  • /ɪkˈspænʃən/
  • Specialized
translation icon : desarrollo
  • A rubber sheet stretched evenly in all directions represents the expansion of the universe.
  • expansion coefficients
  • Taylor expansion
  • continued-fraction expansion

Now how do you do an expansion if you have subtraction instead?

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Examples

  • Now how do you do an expansion if you have subtraction instead?

  • A result of the expansion of the Universe.

  • In Russia, nationalism was on the rise when NATO's expansion into Central Europe posed a threat to Russian security.

    Academic text (2001)
  • As it expands, the technological innovations fueling that expansion continue to increase in value and usefulness.

    Academic text (1997)
  • In mathematics, the binomial theorem provides a formula for the expansion of powers of a binomial expression.

  • The series expansion of the function allows us to approximate its value near the point of expansion.

  • You can learn how to perform an expansion of algebraic expressions by studying polynomial functions.

Antonyms

451 3.2

A decrease in size, amount, degree, or price

Compounds

expansion slot
  • Specialized
1 5.2

A socket inside a computer that holds an extra card like a graphics card

7.6

A number showing how much a material grows or shrinks for each degree of temperature change

expansion bit
  • Specialized
8.6

A drill bit with an adjustable blade for making holes of different sizes

expansion bolt
  • Specialized
5.3

A metal part that spreads inside a hole to hold heavy things to concrete or brick

Surface Forms

expansion singular
expansions plural

Morphology

expansion = expand (semi-transparent) = expand + sion

The mathematical sense is derived from the general idea of 'making larger' (e.g., expanding an expression), but it is a specialized technical meaning that may not be fully inferable to lower-level learners.

Etymology

Expansion comes from Latin parts ex- 'out' and pandere 'to spread', the same root as expand. In math, an expansion is when you 'open up' an expression into separate terms, so the word fits the idea of spreading something into pieces.