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Definitions and Synonyms of boundary | Another word for boundary | What is boundary?

Definition 1: the greatest possible degree of something - [noun denoting attribute]

Samples where boundary or its synonyms are used according to this definition

  • what he did was beyond the bounds of acceptable behavior
  • to the limit of his ability

Synonyms for boundary in the sense of this definition

(boundary is a kind of ...) the distance or area or volume over which something extends

"the vast extent of the desert" "an orchard of considerable extent"

(... is a kind of boundary ) a narrow boundary

"he lived on a knife-edge between genius and insanity"

(... is a kind of boundary ) the quality of being complete or utter or extreme

"the starkness of his contrast between justice and fairness was open to many objections"

(... is a kind of boundary ) a limit to high speed flight imposed by aerodynamic heating

(... is a kind of boundary ) the greatest possible degree

"he tried his utmost"

(... is a kind of boundary ) the limit beyond which something happens or changes

"on the verge of tears" "on the brink of bankruptcy"

Definition 2: the line or plane indicating the limit or extent of something - [noun denoting location]

Synonyms for boundary in the sense of this definition

(boundary is a kind of ...) the outermost or farthest region or point

(... is a kind of boundary ) the natural margin formed by hair on the head

(... is a kind of boundary ) the extended two-dimensional outer boundary of a three-dimensional object

"they skimmed over the surface of the water" "a brush small enough to clean every dental surface" "the sun has no distinct surface"

(... is a kind of boundary ) the line that appears to bound an object

(... is a kind of boundary ) the boundary of a specific area

(... is a kind of boundary ) a boundary marking the extremities of something

"the end of town"

(... is a kind of boundary ) the boundary of a surface

(... is a kind of boundary ) the boundary of a city

(... is a kind of boundary ) the boundary between two counties

(... is a kind of boundary ) the boundary between two districts

(... is a kind of boundary ) an archaic term for a boundary

(... is a kind of boundary ) a line that indicates a boundary

(... is a kind of boundary ) the boundary marking the edge of the sun's influence; the boundary (roughly 100 AU from the sun) between the interplanetary medium and the interstellar medium; where the solar wind from the sun and the radiation from other stars meet

(... is a kind of boundary ) an international boundary or the area (often fortified) immediately inside the boundary

(... is a kind of boundary ) a boundary line between land and water

(... is an instance of boundary) the boundary in ancient times between Italy and Gaul; Caesar's crossing it with his army in 49 BC was an act of war

(... is an instance of boundary) the boundary between the Earth's crust and the underlying mantle

"the Mohorovicic discontinuity averages 5 miles down under oceans and 20 miles down under continents"

Definition 3: a line determining the limits of an area - [noun denoting shape]

Synonyms for boundary in the sense of this definition

(boundary is a kind of ...) a length (straight or curved) without breadth or thickness; the trace of a moving point

(... is a kind of boundary ) the shape of a raised edge of a more or less circular object

(... is a kind of boundary ) the boundary line or the area immediately inside the boundary

(... is a kind of boundary ) the outside boundary or surface of something

(... is a kind of boundary ) a region marking a boundary

(... is a kind of boundary ) (mathematics) a number equal to or greater than any other number in a given set

(... is a kind of boundary ) (mathematics) a number equal to or less than any other number in a given set

(... is a kind of boundary ) the middle of the chief navigable channel of a waterway that forms the boundary line between states

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