Definition:Section


 * Dedekind Section or Dedekind Cut
 * Section (Geometry): the intersection of one line with another
 * The Golden Section: $\dfrac {1 + \sqrt 5} 2$
 * Section (Topology)

Linguistic Note
The word section is derived from the Latin seco, secare, secui, sectum: meaning cut.

In all usages of this term, the concept of cut lies at the base of its linguistic derivation.

Also see

 * Bisection
 * Cross-section
 * Sector