Definition of expand
1 : to open up : unfold
2 : to increase the extent, number, volume, or scope of : enlarge
3a : to express at length or in greater detailb : to write out in full expand all abbreviationsc : to subject to mathematical expansion expand a function in a power series
1 : to open out : spread
2 : to increase in extent, number, volume, or scope
3 : to speak or write fully or in detail expanded on the theme
4 : to feel generous or optimistic
expandabilityplay \ik-ˌspan-də-ˈbi-lə-tē\ noun
expandableplay \ik-ˈspan-də-bəl\ adjective
Examples of expand in a Sentence
The liquid expands and contracts with changes in temperature.
His business has expanded to serve the entire state.
The coffee shop may expand into a full restaurant.
He has expanded his business to serve the entire state.
There are plans to expand the airport.
The police have decided to expand their investigation.
She plans to expand the lecture series into a book.
Expand the abbreviation “deg.” to “degree.”
Recent Examples of expand from the Web
Clear is expanding at major U.S. airports with lanes using fingerprints or iris scans to check members’ identities.
Trump unsuccessfully tried to expand the luxe portion of her label abroad.
The pilot project, which could eventually be expanded to all city facilities, will help San Diego plan future efficiency upgrade projects to help meet the goals in its ambitious climate action plan.
On Wednesday, as the Dow sank nearly four hundred points, the Justice Department named Robert Mueller as special counsel to oversee the rapidly expanding Russia investigation and its offshoots.
Trees, Shrubs, and Conifers (Timber Press, $49.95), by George E. Brown, revised and expanded by Tony Kirkham, walks any would-be arborist through a veritable dictionary of trees, from abelias to zenobias.
The changes given final approval Sunday expanded the list of acceptable IDs first devised in the original 2011 law to include passport cards and recently expired identifications.
If spring was any indication, Hastings' role in the offense could expand as a safety valve for Stidham, should the former Baylor quarterback win the starting job.
Having a plan to expand on an existing deck is better than replacing one that was already built.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'expand'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of expand
Middle English expaunden, from Latin expandere, from ex- + pandere to spread — more at fathom
First Known Use: 15th century
Synonym Discussion of expand
EXPAND Defined for English Language Learners
Definition of expand for English Language Learners
: to increase in size, range, or amount : to become bigger
: to cause (something) to increase in size, range, or amount : to make (something) bigger
: to write (something) in full form
EXPAND Defined for Kids
Definition of expand for Students
1 : to grow or increase in size, number, or amount The airport is expanding.
2 : to open wide : unfold The eagle's wings expanded.
3 : to take up or cause to take up more space Metals expand under heat.
4 : to speak or write about in greater detail Would you expand on that idea?
Seen and Heard
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