Define (verb), Definite (adjective), Definition (noun):
from Latin de (q.v.), a preposition with many mean-
ings, both physical and abstract, and finis "end,
boundary, border," of unknown prior origin. When
you define something you "put boundaries around"
what it can mean. A good definition puts an end
to confusion about what a tenn means. In calculus,
a definite integral has numerical limits or "bound-
aries" on it, as opposed to an indefinite integral.
My knowledge of maths is very superficial. I am just a beginner in maths. That was the best explanation I could produce with my mediocre knowledge.