boundary
noun
bound·ary
ˈbau̇n-d(ə-)rē 
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
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
Kumar has run in this district before, though before its boundaries were redrawn in 2021.
—
Todd Spangler, Freep.com, 15 Nov. 2025
From his early days as a student at the University of Southern California’s School of Cinematic Arts to the global phenomenon of Indiana Jones, Lucas has consistently pushed the boundaries of cinema, earning him an Academy Award for Lifetime Achievement in 2005, among numerous other accolades.
—Abby Montanez, Robb Report, 14 Nov. 2025
Today, the brand continues to be a leader in the watchmaking space with its merging of tradition and innovation, pushing the boundaries with its latest releases.
—Kanika Talwar, Footwear News, 14 Nov. 2025
Despite a 1689 treaty that placed the Sino-Russian boundary some seven hundred kilometers north of the Amur River, the unequal treaties of 1858 and 1860 drew the Russians right to the Amur and Ussuri Rivers, the edge of the Qing motherland.
—Literary Hub, 14 Nov. 2025
See All Example Sentences for boundary
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Todd Spangler, Freep.com, 15 Nov. 2025
From his early days as a student at the University of Southern California’s School of Cinematic Arts to the global phenomenon of Indiana Jones, Lucas has consistently pushed the boundaries of cinema, earning him an Academy Award for Lifetime Achievement in 2005, among numerous other accolades.
—Abby Montanez, Robb Report, 14 Nov. 2025
Today, the brand continues to be a leader in the watchmaking space with its merging of tradition and innovation, pushing the boundaries with its latest releases.
—Kanika Talwar, Footwear News, 14 Nov. 2025
Despite a 1689 treaty that placed the Sino-Russian boundary some seven hundred kilometers north of the Amur River, the unequal treaties of 1858 and 1860 drew the Russians right to the Amur and Ussuri Rivers, the edge of the Qing motherland.
—Literary Hub, 14 Nov. 2025
See All Example Sentences for boundary
Cite this Entry
“Boundary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boundary. Accessed 17 Nov. 2025.
Copy CitationKids Definition
boundary
noun
bound·ary
ˈbau̇n-d(ə-)rē
plural boundaries
: something that points out or shows a limit or end : dividing line
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