In classical
geometry, a
point is an entity that has no extent.
In the modern
set theoretic approach to
topology, this is formalised as: a
point in a
space X is simply an element of the set
X.
See also: solution point
In
typography, a
point is approximately 1/72
inch; on computer displays it is often one or four
pixels.
In
sports and
games, a
point is a unit of
scoring.
A
point on a
railroad is also called a
railroad switch.