Boundary Definition

boundə-rē, -drē
boundaries
noun
boundaries
Any line or thing marking a limit; bound; border.
Webster's New World
The border or limit so indicated.
American Heritage
Wiktionary

(cricket) An event whereby the ball is struck and either touches or passes over a boundary (with or without bouncing), usually resulting in an award of 4 (a four) or 6 (a six) runs respectively for the batting team.

Wiktionary

(topology) (of a set) The set of points in the closure of a set , not belonging to the interior of that set.

Wiktionary
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Other Word Forms of Boundary

Noun

Singular:
boundary
Plural:
boundaries

Origin of Boundary

  • Old French, from Latin

    From Wiktionary

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