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
The appointment speaks to the rapid expansion ambitions of MOD, founded in 2008 by Scott and Ally Svenson.
The proposal would repeal Obamacare’s coverage expansion in two years, giving lawmakers time to come up with a replacement.
The deal is the largest expansion deal the city has approved in at least nine years, Planning and Development Director Phil Taillon said.
The expansion will essentially extend the existing deck to the corner of 28th Street South and 10th Avenue South.
The United Nations has repeatedly held that Israel’s maintenance — and expansion — of settlements in the occupied West Bank constitutes a violation of international law.
In his state, more than 700,000 low-income people have gained coverage through the expansion of Medicaid under the Affordable Care Act.
Miami-Dade Aviation Director Emilio T. González There’s one bonus: Frontier is giving one winner 15 round trip flights to celebrate it’s expansion in Miami.
Both sweet shops will be part of WestBend’s ongoing property redevelopment, which will continue with an expansion onto an adjacent 3.5-acre tract of land immediately south of the shopping center.
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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