Cross section can refer to:

• Cross section (geometry), the intersection of a 3-dimensional body with a plane
• Cross section (physics), the likelihood of an interaction event between two particles
  • Radar cross section
  • Neutron cross-section
  • Absorption cross section
• Plan view, in orthographic projections, a view taken part way through an object
• An alternative name for a section of a fiber bundle or a sheaf, in differential and algebraic geometry and topology

Querschnitt | Section efficace | Sezione d'urto