# semi-axis

> term in geometry; longest and shortest semidiameters of an ellipse

**Wikidata**: [Q21143897](https://www.wikidata.org/wiki/Q21143897)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Semi-major_and_semi-minor_axes)  
**Source**: https://4ort.xyz/entity/semi-axis