Definition of expansion
- territorial expansion
- economic expansion
- expansion of the universe
- the book is an expansion of a lecture series
The league is undergoing expansion.
the expansion of a lecture series into a book
This book is an expansion of a lecture series.
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.
: 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
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