TOPICS
Search

Semimajor Axis


The semimajor axis (also called the major semi-axis, major semiaxis, or major radius) of an ellipse (or related figure) is half its extent along the longer of the two principal axis.


See also

Ellipse, Radius, Semiminor Axis

Explore with Wolfram|Alpha

Cite this as:

Weisstein, Eric W. "Semimajor Axis." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/SemimajorAxis.html

Subject classifications