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

Based on WordNet 3.0 copyright © Princeton University.
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