Noun
That which indicates or fixes a limit or extent, or marks a bound, as of a territory; a bounding or separating line; a real or imaginary limit.
Source: Webster's dictionaryScience is a differential equation. Religion is a boundary condition. Alan Turing
There is a boundary to men's passions when they act from feelings; but none when they are under the influence of imagination. Edmund Burke
No man has the right to fix the boundary to the march of a nation. Charles Stewart Parnell
I work on the boundary between economics and statistics in this field called econometrics. Part of my interest is understanding how you use statistics in productive ways to analyze dynamic economic models. Lars Peter Hansen
Don't move an ancient boundary stone or encroach on the fields of the fatherless. African Proverb
You never had neighbours as good as boundary fences. Irish Proverb