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TOEFL IELTS BNC: 2360 COCA: 2734

expansion

noun

ex·​pan·​sion ik-ˈspan(t)-shən How to pronounce expansion (audio)
1
2
: the act or process of expanding
territorial expansion
economic expansion
expansion of the universe
3
: the quality or state of being expanded
4
: the increase in volume of working fluid (such as steam) in an engine cylinder after cutoff or in an internal combustion engine after explosion
5
a
: an expanded part
b
: something that results from an act of expanding
the book is an expansion of a lecture series
6
: the result of carrying out an indicated mathematical operation : the expression of a function in the form of a series
expansional
ik-ˈspanch-nəl How to pronounce expansion (audio)
-ˈspan(t)-shə-nᵊl
adjective

Example Sentences

The league is undergoing expansion. the expansion of a lecture series into a book This book is an expansion of a lecture series.
Recent Examples on the Web Construction will begin next year on an expansion to the Windgate Building, with the new square footage to be partly used as studio space for faculty and students. From Usa Today Network And Wire Reports, USA TODAY, 14 Sep. 2022 The contract is an expansion of the program from the county’s middle schools to its elementary schools. Nicole Asbury, Washington Post, 13 Sep. 2022 Kroger announced an expansion of its private-label business on Friday, convinced that customers’ taste for cheaper options will last long into the future. The Editorial Board, WSJ, 13 Sep. 2022 The American Stories Documentary Fellowship serves as an expansion of the American Stories Documentary Fund, which was launched in 2020 and aimed to support filmmakers with projects that were in production and impacted by the COVID-19 pandemic. Abbey White, The Hollywood Reporter, 13 Sep. 2022 The 8,000-square-foot retail display and sales floor is an expansion of Aurora Mills Architectural Salvage, which has been selling architectural antiques, industrial objects and salvaged Oregon lumber since 1999 in a historic former mill. oregonlive, 13 Sep. 2022 The expansion of the Child Tax Credit helped reduce childhood poverty, as measured by the bureau's Supplemental Poverty Measure, from 9.7% in 2020 to 5.2% last year. Mike Schneider, ajc, 13 Sep. 2022 The expansion of the Child Tax Credit helped reduce childhood poverty, as measured by the bureau’s Supplemental Poverty Measure, from 9.7 percent in 2020 to 5.2 percent last year. Mike Schneider, BostonGlobe.com, 13 Sep. 2022 The Louisville distillery, which opened in 2016, just completed an $8.2 million expansion of its facilities. Jonah Flicker, Robb Report, 12 Sep. 2022 See More

Word History

First Known Use

1611, in the meaning defined at sense 1

Time Traveler
The first known use of expansion was in 1611

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