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  1. BOUNDARY Definition & Meaning - Merriam-Webster

    Jun 20, 2026 · The meaning of BOUNDARY is something that indicates or fixes a limit or extent. How to use boundary in a sentence.

  2. BOUNDARY | English meaning - Cambridge Dictionary

    BOUNDARY definition: 1. a real or imagined line that marks the edge or limit of something: 2. the limit of a subject or…. Learn more.

  3. Boundary - Wikipedia

    Boundary (topology), the closure minus the interior of a subset of a topological space; an edge in the topology of manifolds, as in the case of a 'manifold with boundary' boundary of a manifold with …

  4. BOUNDARY Definition & Meaning | Dictionary.com

    BOUNDARY definition: a line or limit where one thing ends and another begins, or something that indicates such a line or limit. See examples of boundary used in a sentence.

  5. BOUNDARY definition and meaning | Collins English Dictionary

    2 meanings: 1. something that indicates the farthest limit, as of an area; border 2. cricket a. the marked limit of the playing.... Click for more definitions.

  6. Border - Wikipedia

    A DMZ can act as a war boundary, ceasefire line, wildlife preserve, or a de facto international border. An example of a demilitarized international border is the 38th parallel between North and South Korea. [29]

  7. Boundary - definition of boundary by The Free Dictionary

    Define boundary. boundary synonyms, boundary pronunciation, boundary translation, English dictionary definition of boundary. n. pl. bound·a·ries 1. Something that indicates a border or limit. 2. The border …

  8. Boundary - Definition, Meaning & Synonyms | Vocabulary.com

    If you play a sport you are familiar with the term "in bounds," which refers to the boundary, or limits of the playing field that the players must stay within. It is also the outer limits of any space.

  9. Boundary - National Geographic Society

    Dec 9, 2024 · A boundary is a real or imaginary line that separates two things. In geography, boundaries separate different regions of Earth.

  10. BOUNDARY | definition in the Cambridge English Dictionary

    BOUNDARY meaning: 1. a real or imagined line that marks the edge or limit of something: 2. the limit of a subject or…. Learn more.