boundary Meaning in the Cambridge English Dictionary Cambridge dictionaries logo
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Meaning of “boundary” in the English Dictionary

"boundary" in British English

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boundarynoun [C]

uk   /ˈbaʊn.dər.i/  us   /ˈbaʊn.dər.i/
C1 a ​real or ​imaginedline that ​marks the ​edge or ​limit of something: The Ural ​mountainsmark the boundary betweenEurope and ​Asia. Residents are ​opposed to the ​prison being ​built within the ​city boundary.
C1 the ​limit of a ​subject or ​principle: Electronic ​publishing is blurring the boundaries between ​dictionaries and ​encyclopedias.

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(Definition of boundary from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"boundary" in American English

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boundarynoun [C]

 us   /ˈbɑʊn·dri, -də·ri/
an ​edge or ​limit of something: You can ​campanywhere inside the boundaries of the ​park. Yourwork is ​limited only by the boundaries of ​yourimagination.
(Definition of boundary from the Cambridge Academic Content Dictionary © Cambridge University Press)
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