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

Examples of boundary in a Sentence

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
As the music soars, that life-death veil is pierced, crossing both metaphysical and temporal boundaries. David Rooney, HollywoodReporter, 10 Apr. 2025 Following behind-the-scenes complaints and petitioning from rival studios, the TV Academy drew new boundaries: anthology series were no longer eligible as TV movies and instead had to compete as outstanding limited or anthology series. Clayton Davis, Variety, 10 Apr. 2025 Clarity And Boundaries Many job seekers today—especially those early in their careers—are craving clarity and boundaries. Expert Panel®, Forbes.com, 9 Apr. 2025 Many artists challenge the boundaries imposed by the regime, each finding their own way to push against these restrictions. Rebecca Ruth Gould, JSTOR Daily, 9 Apr. 2025 See All Example Sentences for boundary

Word History

First Known Use

1598, in the meaning defined above

Time Traveler
The first known use of boundary was in 1598

Cite this Entry

“Boundary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boundary. Accessed 16 Apr. 2025.

Kids Definition

boundary

noun
bound·​ary ˈbau̇n-d(ə-)rē How to pronounce boundary (audio)
plural boundaries
: something that points out or shows a limit or end : 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: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!