"Axis" is a term most often used in describing the orientation of Astigmatism. If you look at your written eyeglass prescription, it may say something like "-2.00-1.00X180". What this means is that you have two diopters of myopia (nearsightedness) and one diopter of astigmasim at axis 180. Axis 180 tells you that the orientation of the astigmatism correction is horizontal. Axis 90 would be Vertical. Axis 045 or 135 would be oblique. And it could be any axis from 1 to 180 degress. The degree of the axis depends on the type of astigmatism you have.
The Axis was the alliance among Germany, Italy, and Japan.
picture in picture
The planetary term tilt, means the planet is on one axis
Orbit is a term meaning the rotation of an object on an axis, or the particular rotation something makes. The term orbit is used for describing the manner in which planets rotate on their axis, and more!
"ametropia" is the medical term for blurred vision."diplopia" is the medical term for double vision.
The area that you can see without moving your head or your eyes.
It means turning around a fixed point or axis.
In the context of an ellipse, the vertical axis is the major axis.
The relative sizes of the numerator and denominator have nothing to do with the major axis.