Expansion definition

ĭk-spănshən
The amount, degree, or extent of expansion.
noun
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The extent or amount by which something has expanded.
noun
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16
An increase in the volume of a substance while its mass remains the same. Expansion is usually due to heating. When substances are heated, the molecular bonds between their particles are weakened, and the particles move faster, causing the substance to expand.
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8
An expanding or being expanded; enlargement; dilation.
noun
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9
(sports) Designating or of a team added during the expansion of a league.
adjective
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(mech.) The expanding in volume of steam in the cylinder of a steam engine after cutoff, or of gas in the cylinder of an internal-combustion engine after explosion.
noun
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An expanded thing or part.
noun
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A development or full treatment, as of a topic.
noun
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4
A number or other mathematical expression written in an extended form. For example, a2 + 2 ab + b2 is the expansion of ( a + b )2 .
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2
The process or result of working out or giving the full form of a contraction, equation, etc.
noun
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4
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(sports) The act or an instance of increasing the number of teams in a league.
noun
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4
Expansion is defined as the act of getting bigger or something added onto something else.

An example of an expansion is an extra three rooms built onto a house.

noun
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An expanse.
noun
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A period of increased economic or business activity.
noun
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The act or process of expanding.

The new nation's expansion westward.

noun
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An expanded part.

An expansion of a river.

noun
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A product of expanding.

A book that is an expansion of the author's PhD thesis.

noun
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A quantity written in an extended form, such as in a sum or product of terms.
noun
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The process of obtaining this form.
noun
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The act or process of expanding.

The expansion of metals and plastics in response to heat is well understood.

noun
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The fractional change in unit length per unit length per unit temperature change.
noun
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A new addition.

My new office is in the expansion behind the main building.

noun
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A product to be used with a previous product.

This expansion requires the original game board.

noun
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That which is expanded; expanse; extended surface.
noun
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The state of being expanded.
noun
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Other Word Forms

Noun

Singular:
expansion
Plural:
expansions