something that indicates bounds or limits; a limiting or bounding line.
Also called frontier .Mathematics. the collection of all points of a given set having the property that every neighborhood of each point contains points in the set and in the complement of the set.
- trans·bound·a·ry, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use boundary in a sentence
What happened to true love knows no boundaries and all that?Freaking Out About Age Gaps in Gay Relationships Is Homophobic | Samantha Allen | January 9, 2015 | THE DAILY BEAST
By drawing boundaries against wrongful conduct, law provides a protective zone of freedom within those boundaries.
“Telling employees to stick to authorized legal boundaries is a good thing,” he said Wednesday when asked about the quote.CIA Interrogation Chief: ‘Rectal Feeding,’ Broken Limbs Are News to Me | Kimberly Dozier | December 11, 2014 | THE DAILY BEAST
You've said that the new run of Secret Six stories will push boundaries, especially around sex in comics.Gail Simone’s Bisexual Catman and the ‘Secret Six’ | Rich Goldstein | December 6, 2014 | THE DAILY BEAST
But it is a worrying claim nonetheless, one of many testing the boundaries of this new area of law.Catholic Church: Religious Freedom Trumps Civil Rights | Jay Michaelson | November 23, 2014 | THE DAILY BEAST
I started for it once, but never even reached the western boundaries of New York.Ancestors | Gertrude Atherton
Tobacco is found growing along the whole western sea-board of South America until we reach the northern boundaries of Patagonia.Tobacco; Its History, Varieties, Culture, Manufacture and Commerce | E. R. Billings.
Virginia has parts of eight different river systems within its boundaries.Hallowed Heritage: The Life of Virginia | Dorothy M. Torpey
In a city lot courses and distances play a larger part in fixing the boundaries, and are more carefully defined.Putnam's Handy Law Book for the Layman | Albert Sidney Bolles
And so people learned to stay on their own lands and mothers taught their children what the boundaries were.The Later Cave-Men | Katharine Elizabeth Dopp
British Dictionary definitions for boundary
something that indicates the farthest limit, as of an area; border
the marked limit of the playing area
a stroke that hits the ball beyond this limit
the four runs scored with such a stroke, or the six runs if the ball crosses the boundary without touching the ground
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012