Axis: nm (word coming from the Latin axis “axle”).
The word “axis” has several meanings:
1. Ideal line around which a rotation takes place.
Astronomy: World axis (celestial coordinates).
Geometry: Straight line around which a plane figure turns to generate a solid of revolution.
The axis of a cylinder, a cone, a sphere.
Rotation axis.
2. Science: Line with a unit vector and an origin.
Mathematics: Axis of abscissas, ordinates.
Syst ...
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