boundary
UK: ˈbaʊnd(ə)ri | US: ˈbaʊnd(ə)ri
n. a real or imagined line that marks the edge or limit of something
n. a dividing line between two regions or areas
n. (figurative) a limit of a subject or sphere of activity
boundary = bound<limit> + ary<noun suffix>
- bound: From Middle English bounden (to set limits), derived from Old French bondir (to leap, rebound) and ultimately Latin bodina (boundary marker). The modern sense of "limit" emerged in the 16th century.
- ary: A noun-forming suffix of Latin origin (-arius), indicating "related to" or "place of."
Etymology Origin:
The word boundary evolved from the concept of physical limits (e.g., land demarcations) to abstract divisions. The root bound originally implied movement (e.g., rebounding) but shifted to denote fixed limits, while -ary systematized it as a noun for demarcation. This reflects the human need to define spaces, both tangible (e.g., borders) and intangible (e.g., disciplinary boundaries).
The river forms a natural boundary between the two countries.
Scientists are pushing the boundaries of quantum physics.
The fence marks the boundary of our property.
There’s a fine boundary between confidence and arrogance.
The treaty established new maritime boundaries.