English dictionary



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English noun: boundary

1. boundary (location) the line or plane indicating the limit or extent of something


Synonymsbound, bounds


Broader (hypernym)extremity


Narrower (hyponym)border, border, borderline, boundary line, bourn, bourne, city line, county line, delimitation, demarcation, demarcation line, district line, edge, end, frontier, hairline, heliopause, limit, lineation, mete, outline, shoreline, surface


Instance hyponymMoho, Mohorovicic discontinuity, Rubicon

2. boundary (shape) a line determining the limits of an area


Synonymsbound, edge


Broader (hypernym)line


Narrower (hyponym)border, brink, fringe, lower bound, margin, outer boundary, perimeter, periphery, rim, thalweg, threshold, upper bound, verge

3. boundary (attribute) the greatest possible degree of something


SamplesWhat he did was beyond the bounds of acceptable behavior.
To the limit of his ability.


Synonymsbound, limit


Broader (hypernym)extent


Narrower (hyponym)absoluteness, brink, heat barrier, knife-edge, level best, maximum, starkness, thermal barrier, utmost, uttermost, utterness, verge









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