Axis (Disambiguation)
Axis may refer to
- Y-axis, the vertical line in a coordinate plane
- X-axis, the horizontal line in a coordinate plane
- Semimajor axis, the longest semidiameter of a conic section
- Semiminor axis, the shortest semidiameter of a conic section
- Major axis, the longest diameter of a conic section
- Minor axis, the shortest diameter of a conic section
- Radical axis, a very useful geometry tool that is applicable in many places