The meaning of BOUNDARY is something that indicates or fixes a limit or extent. How to use boundary in a sentence.

BOUNDARY definition: 1. a real or imagined line that marks the edge or limit of something: 2. the limit of a subject or…. Learn more.

BOUNDARY definition: a line or limit where one thing ends and another begins, or something that indicates such a line or limit. See examples of boundary used in a sentence.

boundary A line that delineates surface areas for the purpose of facilitating coordination and deconfliction of operations between adjacent units, formations, or areas.

A boundary is a border and it can be physical, such as a fence between two properties, or abstract, such as a moral boundary that society decides it is wrong to cross.

The boundary of an area of land is an imaginary line that separates it from other areas.

something that indicates bounds or limits, as a line: A mountain range forms a natural boundary between the two countries.

Boundaries are the way for the player to teleport in and out of the Cerebral Spire in Vow of Iron. The player must enter the boundary to unlock it in the Cerebral Spire. 3 Boundaries are …

Nov 1, 2025 · Setting healthy boundaries is an important aspect of great self-care. Here are examples, tips, and worksheets helping you set boundaries.

boundary, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary