Definition of expansion
1 : expanse
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
5a : an expanded partb : 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
expansionalplay \ik-ˈspanch-nəl, -ˈspan(t)-shə-nəl\ adjective
Examples of expansion in a Sentence
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 of expansion from the Web
Emirates’ hub at Dubai International Airport has grown into the world’s busiest for international traffic, in large part thanks to Emirates’ expansion.
Now, lawmakers want to prevent new enrollment in Medicaid expansion – aimed a lower-income, childless adults –
After a horrific 48-point regular season and a depressing fall in the NHL draft lottery, the Avs lost valuable goalie Calvin Pickard to Vegas in the expansion draft.
That expansion could accelerate as parts providers follow the same channels to supply Samsung.
Last year, Barbie announced the expansion of its Fashionistas line with three additional body types and added diversity to reflect the world girls see around them.
If the five-person city council approves those measures at its July 13 meeting by majority vote, the VBC will move forward with expansion plans.
The nation’s 400 richest families alone would receive tax cuts equal to maintaining Obamacare’s Medicaid expansion in Nevada, West Virginia, Arkansas, and Alaska combined.
The company has ambitious expansion plans for Illinois, aiming to eventually open 19 centers here, the website said.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'expansion'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of expansion
EXPANSION Defined for English Language Learners
Definition of expansion for English Language Learners
: the act of becoming bigger or of making something bigger : the act of expanding
: a more complete and detailed written work or set of comments based on something shorter
EXPANSION Defined for Kids
Seen and Heard
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