expansion

[ ik-span-shuh n ]

/ ɪkˈspæn ʃən /

noun

the act or process of expanding.

the state or quality of being expanded.

the amount or degree of expanding.

an expanded, dilated, or enlarged portion or form of a thing: The present article is an expansion of one he wrote last year.

anything spread out; expanse.

Mathematics.

the development at length of an expression indicated in a contracted form, as a2 + 2ab + b2 for the expression (a + b)2.
any mathematical series that converges to a function for specified values in the domain of the function, as 1 + x + x2 + … for 1/(1 − x) when x < 1.

Machinery. that part of the operation of an engine in which the volume of the working medium increases and its pressure decreases.

an increase in economic and industrial activity (opposed to contraction).

additional content for a video game, card game, board game, etc., that significantly expands or alters the way the game is played: I really improved my deck with cards from the latest expansion. You can play the stand-alone expansion without ever buying the original game.

Origin of expansion

1605–15; < Late Latin expānsiōn- (stem of expānsiō) a spreading out. See expanse, -ion

OTHER WORDS FROM expansion

ex·pan·sion·al, adjective an·ti·ex·pan·sion, adjective non·ex·pan·sion, noun o·ver·ex·pan·sion, noun

pre·ex·pan·sion, noun re·ex·pan·sion, noun self-ex·pan·sion, noun su·per·ex·pan·sion, noun

Words nearby expansion

expanding universe, expanding universe theory, expanse, expansible, expansile, expansion, expansion attic, expansion bend, expansion board, expansion bolt, expansion card

British Dictionary definitions for overexpansion (1 of 2)

overexpansion

/ (ˌəʊvərɪksˈpænʃən) /

noun

an excessive increase, enlargement, or development, esp in the activities of a company

British Dictionary definitions for overexpansion (2 of 2)

expansion

/ (ɪkˈspænʃən) /

noun

the act of expanding or the state of being expanded

something expanded; an expanded surface or part

the degree, extent, or amount by which something expands

an increase, enlargement, or development, esp in the activities of a company

maths

the form of an expression or function when it is written as the sum or product of its terms
the act or process of determining this expanded form

the part of an engine cycle in which the working fluid does useful work by increasing in volume

the increase in the dimensions of a body or substance when subjected to an increase in temperature, internal pressure, etc

Derived forms of expansion

expansionary, adjective

Medical definitions for overexpansion

expansion

[ ĭk-spăn′shən ]

n.

An increase in size.

The spreading out of a structure, such as a tendon.

Scientific definitions for overexpansion

expansion

[ ĭk-spăn′shən ]

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.

A number or other mathematical expression written in an extended form. For example, a2 + 2ab + b2 is the expansion of (a + b)2.

BROWSE DICTIONARY

Learning

expansion

noun

Origin of expansion

OTHER WORDS FROM expansion

Words nearby expansion

British Dictionary definitions for overexpansion (1 of 2)

noun

British Dictionary definitions for overexpansion (2 of 2)

noun

Derived forms of expansion

Medical definitions for overexpansion

n.

Scientific definitions for overexpansion

BROWSE DICTIONARY

Learning

expansion

noun

Origin of expansion

OTHER WORDS FROM expansion

Words nearby expansion

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noun

British Dictionary definitions for overexpansion (2 of 2)

noun

Derived forms of expansion

Medical definitions for overexpansion

n.

Scientific definitions for overexpansion

British Dictionary definitions for overexpansion (1 of 2)