Axis

Line around which an object rotates or is positioned.

axial line axis of rotation

A line or imaginary straight path around which an object rotates or is positioned. In geometry, it serves as a reference line for measurements and symmetry.

/ˈaksɪs/

The term 'axis' comes from the Greek word ‘axōn’ meaning ‘pivot or axle.’

An axis is like an invisible line that things spin around, like the Earth spins on its axis.

The Earth's axis is tilted at approximately 23
5 degrees
The North Star appears fixed because it lies close to Earth's axis of rotation
Axes are fundamental in mathematics and physics for describing rotations and coordinates

line reference line

coordinate axis rotational axis

graph coordinate system

geometric mathematical concept