Online Google Dictionary

boundaries 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/ˈbound(ə)rē/,
Font size:

boundaries, plural;
  1. A line that marks the limits of an area; a dividing line
    • - the eastern boundary of the wilderness
    • - the boundary between the U.S. and Canada
    • - a boundary wall
  2. A limit of a subject or sphere of activity
    • - a community without class or political boundaries
  1. (boundary) the line or plane indicating the limit or extent of something
  2. (boundary) limit: the greatest possible degree of something; "what he did was beyond the bounds of acceptable behavior"; "to the limit of his ability"
  3. A unit of real estate or immovable property is limited by a legal boundary. The boundary (in Latin: limes) may appear as a discontinuation in the terrain: a ditch, a bank, a hedge, a wall, or similar, but essentially, a legal boundary is a conceptual entity, a social construct, adjunct to the ...
  4. (Boundary (cricket)) Boundary has two distinct meanings in the sport of cricket; # the edge or boundary of the playing field, and # a manner of scoring runs.
  5. (Boundary (of a manifold)) In mathematics, a topological manifold is a topological space (can even be a separated space) which looks locally like Euclidean space in a sense defined below. Topological manifolds form an important class of topological spaces with applications throughout mathematics.
  6. (Boundary (thermodynamic)) In thermodynamics, a thermodynamic system (originally, working substance) is a precisely defined region of the universe under study. Everything in the universe except the system is known as the surroundings, environment, or reservoir. ...
  7. (Boundary (topology)) In topology and mathematics in general, the boundary of a subset S of a topological space X is the set of points which can be approached both from S and from the outside of S. More precisely, it is the set of points in the closure of S, not belonging to the interior of S. ...
  8. (boundary) The dividing line or location between two areas; An edge or line marking an edge of the playing field; 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 ...
  9. (boundary) Edge, of course; it confines the space/time continuum. Usually marked by white stakes.
  10. (Boundary) Denotes the outer limit of the playing area. Also used to describe a stroke by the batsman which immediately results in 4 runs.
  11. (boundary) (JP 1-02) - A line which delineates surface areas for the purpose of facilitating coordination and deconfliction of operations between adjacent units, formations, or areas. (Army) - 1. A control measure used to define the right, left, rear, and forward limits of an area of operation. ...
  12. (BOUNDARY) Edge or limit of a property. See "property line".
  13. (Boundary) The dividing line between two adjacent properties.
  14. (Boundary) A separation, natural or artificial, which marks the division of two contiguous properties.
  15. (Boundary) This describes the interface between a system and its environment. Everything within the boundary forms part of the system, everything outside the boundary forms part of the external environment.
  16. (boundary) The outline of a profile. A boundary is the outer edge of a 2D area. A boundary can be formed by the perimeter of a profile resulting when a plane intersects a 3D object.
  17. The boundary of a set is the set's closure minus its interior.
  18. (Boundary) The lines that define the perimeter of a property.
  19. (BOUNDARY) In the mathematical sense used in a number of models at this site, a boundary is a frequency above or below which selection forces change from favoring some trait to favoring an alternative.
  20. (BOUNDARY) The line dividing two regions. In practice, often a zone of transition between two regions but because of the zone's width being much, much less than its length, appearing as a sharp demarcation when viewed on a global scale -- atmospheric examples: warm and cold fronts. ...
  21. (Boundary) A ball that hits or clears a boundary fence or rope, worth 4 or 6 points. (See four and/or six)
  22. (Boundary) A limit line. Typically used to indicate some form of constraint.
  23. (Boundary) An invisible though often effective barrier within a relationship that governs the level of contact. Boundaries can appropriately shape and regulate relationships. ...
  24. (Boundary) Indicates a border or limit. Typically designates the extents of contiguous areas such as school, water, sewer and flood control districts, community planning areas, zoning designations, soil conditions, geologic formations, parcels and easements.
  25. (Boundary) Outdated name for a DLF Maximum.