Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “boundary”

See all translations

boundary

noun [C] uk   /ˈbaʊn.dər.i/ /-dri/ us    /-dɚ-/
C1 a real or imagined line that marks the edge or limit of something: The Ural mountains mark the boundary between Europe 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.
More examples
Translations of “boundary”
in Korean 경계…
in Arabic حَدّ فاصِل…
in French frontière, limite…
in Turkish sınır, çizgi, hat…
in Italian limite, confine…
in Chinese (Traditional) 分界線, 邊界, 界限…
in Russian граница, предел…
in Polish granica…
in Spanish frontera, punto…
in Portuguese limite, fronteira…
in German die Grenzlinie, der Schlag bis zur Spielfeldgrenze…
in Catalan límit, frontera…
in Japanese 境界線…
in Chinese (Simplified) 分界线, 边界, 界限…
(Definition of boundary from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of boundary?
Add Cambridge dictionaries to your browser to your website

Definitions of “boundary” in other dictionaries

SMART Thesaurus: Territorial boundaries

“boundary”: synonyms and related words:

You can also find related words, phrases, and synonyms in the topics:

Word of the Day

shampoo

a liquid used for washing hair, or for washing particular objects or materials

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

crossfit noun

March 23, 2015
high-intensity strength training Two women in strappy dresses discussed how much weight they could snatch

Read More