boundary

noun

bound·​ary ˈbau̇n-d(ə-)rē How to pronounce boundary (audio)
plural boundaries
: something that indicates or fixes a limit or extent
Those two trees mark the boundary of our property.
the mountain range that forms the country's northern boundary
boundaryless adjective
boundarylessness noun

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Example Sentences

Those two trees mark the boundary of our property. The river forms the country's western boundary. at the boundary between fact and fiction You need to set boundaries with your children. Did he violate the boundaries of the doctor-patient relationship?
Recent Examples on the Web Three years ago, crossings of the informal boundary that divides the waterway were unheard off. Christian Shepherd, Washington Post, 7 Aug. 2022 Twenty-two Chinese military aircraft briefly crossed the median line in the Taiwan Strait, an informal boundary that Chinese planes have crossed only infrequently, the Taiwanese defense ministry said. Chris Buckley, BostonGlobe.com, 4 Aug. 2022 Twenty-two Chinese military aircraft briefly crossed the median line in the Taiwan Strait, an informal boundary that Chinese planes have crossed only infrequently, the Taiwanese defense ministry said. New York Times, 3 Aug. 2022 There should be more space to spread out a year from now when the 80 acres of park areas, most of it along the property’s southern boundary, are completed. San Diego Union-Tribune, 3 Aug. 2022 Her priorities include protecting Seminole County’s rural boundary, which restricts development on the east side of the county. Orlando Sentinel, 29 July 2022 An example of an emotional boundary may be avoiding name calling when your child does something wrong or giving them the space to be upset without minimizing their feelings. Elizabeth Ayoola, Essence, 29 July 2022 Instead of pulling back, The Rehearsal leans into its most uncomfortable dynamics, aware that its most excruciating moments of boundary-crossing are the core of its appeal. John Semley, The New Republic, 28 July 2022 That second blaze — the smaller Agua fire — started Monday, three miles west of the town of Mariposa, which is about 27 miles west of the park boundary. Christopher Reynoldsstaff Writer, Los Angeles Times, 20 July 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'boundary.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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Word History

First Known Use

1598, in the meaning defined above

Time Traveler
The first known use of boundary was in 1598

Dictionary Entries Near boundary

Cite this Entry

“Boundary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boundary. Accessed 18 Aug. 2022.

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Kids Definition

boundary

noun
bound·​ary ˈbau̇n-də-rē How to pronounce boundary (audio)
ˈbau̇n-drē
plural boundaries
: something that points out or shows a limit or end : a dividing line

Legal Definition

boundary

noun
bound·​ary
plural boundaries
: a theoretical line that marks the limit of an area of land

More from Merriam-Webster on boundary

Last Updated: 10 Aug 2022

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