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
Make time for personal activities, set boundaries and prioritize your well-being.
—
Angelo Chavez, Forbes.com, 2 July 2025
When Mercury enters your sign on June 26, your ability to communicate your needs and boundaries sharpens.
—Meghan Rose, Glamour, 1 July 2025
There was no need to build structures that would last, especially given how rapidly the boundaries were changing.
—Jennie Rothenberg Gritz, Smithsonian Magazine, 1 July 2025
Despite her efforts to keep things civil, the woman’s boundaries were repeatedly dismissed.
—Ashley Vega, People.com, 30 June 2025
See All Example Sentences for boundary
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Angelo Chavez, Forbes.com, 2 July 2025
When Mercury enters your sign on June 26, your ability to communicate your needs and boundaries sharpens.
—Meghan Rose, Glamour, 1 July 2025
There was no need to build structures that would last, especially given how rapidly the boundaries were changing.
—Jennie Rothenberg Gritz, Smithsonian Magazine, 1 July 2025
Despite her efforts to keep things civil, the woman’s boundaries were repeatedly dismissed.
—Ashley Vega, People.com, 30 June 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 7 Jul. 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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