Definition of boundary in English:

boundary

noun

  • 1A line that marks the limits of an area; a dividing line.

    ‘the eastern boundary of the wilderness’
    ‘the boundary between the US and Canada’
    as modifier ‘a boundary wall’
    • ‘A ball of light suddenly appeared on top of the massive wall marking the boundary of the city.’
    • ‘An old stone wall marks the boundary of the plot to one side, while a rocky hill and concrete wall flanks the other.’
    • ‘Ropes will be required to mark out the boundary of the area as well as each plot.’
    • ‘You know, the neighbors are one meter away, across a river or across a boundary line.’
    • ‘There were fields beyond Scots Lane to the north and the cathedral marked the southern boundary.’
    • ‘Nonetheless, the boundary ditches mark a significant moment in the long history of the valley.’
    • ‘The line came to be regarded as marking the northern boundary of the area where agriculture could be safely pursued.’
    • ‘To the west of this is Chile, with the border marking the western boundary of the national park.’
    • ‘The decision to draw the boundary according to county lines made little social, economic, or geographical sense.’
    • ‘Meandering through the Oxfordshire countryside, the river marks the eastern boundary of the public part of the garden.’
    • ‘Accordingly it might well be held to mark the boundary of Australia's continental shelf.’
    • ‘This street marks the boundary between the old and new districts of the city.’
    • ‘The boundary line for private properties is usually where the sandy area ends and the vegetation begins.’
    • ‘A high wooded ridge that runs southward from the mouth of the Orne marked the boundary of the triangle to be held.’
    • ‘Lay a hose or piece of rope on the ground to mark the boundary of your planting area, and plant within it.’
    • ‘Work is going on all this week at the club to bring down the poplars, which line the eastern boundary of the course alongside the first hole.’
    • ‘Grey weathered posts, with white ant mounds creeping up around them, mark the boundary.’
    • ‘In the picture above, the blue lines mark the boundary of the infected region.’
    • ‘Ten points are agreed as the turning points of the boundary line.’
    • ‘As I understand it, not so long ago, Oxford Street marked its northern boundary.’
    border, frontier, borderline, partition, dividing line, bounding line
    bounds, confines, limits, outer limits, extremities, margins, edges, fringes
    View synonyms
    1. 1.1often boundaries A limit of a subject or sphere of activity.
      ‘a community without class or political boundaries’
      • ‘Networks may cut across social class boundaries and they may also reveal differences within social classes.’
      • ‘Using indigenous and interesting sounds we are constantly prodding at the boundaries of rock and roll.’
      • ‘If we do away with the old subject boundaries and hierarchies and exams we open places of education up to people of all ages, all abilities.’
      • ‘There's a place where boys perhaps wisely fear to tread, somewhere where the boundaries of rock and jazz blur.’
      • ‘What I study does not fit into the traditional boundaries of sociological knowledge.’
      • ‘In this way, video game turfs serve to mark boundaries and borders for methods of exploration and play.’
      • ‘It does not encourage drawing those sorts of abstract internal boundaries.’
      • ‘The issue of global warming is one that cuts across all political and social boundaries.’
      • ‘Both governments have pushed the boundaries of political advertising before.’
      • ‘The annihilation of the dinosaurs marks the boundary linking Cretaceous time and Tertiary time.’
      • ‘Drawing on that, the director has cast his Don adrift on the stage, breaking out of the boundaries of the traditional set.’
      • ‘Secondly, job security has also crossed traditional class boundaries in the last twenty years.’
      • ‘That debate cut across all boundaries, be they family, social or political.’
      • ‘While the jet set rule the grounds, genuine golf lovers cut across class boundaries.’
      • ‘Wealth also can be important in marking social boundaries in rural areas.’
      • ‘The list is incomplete, for the boundaries of the subject are steadily expanding.’
      • ‘Russell explains that Bacon sought to blur the boundaries between representation and abstraction.’
      • ‘Melancholy is not the only vehicle through which the traditional boundaries between male and female are examined.’
      • ‘Globalization studies is emerging as a new field that cuts across traditional disciplinary boundaries.’
      • ‘We have eliminated traditional boundaries and made the proposition much clearer for shoppers.’
      dividing line, divide, division, borderline, demarcation line, line of demarcation, cut-off point, threshold
      limits, parameters, bounds, outer limits, confines, extremities, barriers, thresholds
      View synonyms

Origin

Early 17th century: variant of dialect bounder, from bound + -er, perhaps on the pattern of limitary.

Pronunciation

boundary

/ˈbound(ə)rē//ˈbaʊnd(ə)ri/