Nadir comes for the arabic nazir, meaning opposite. Nadir is the direction directly below a point. It is in a way the opposite to Zenith. The word is also used in the meaning of the lowest point.
Nadir
The mathematical term for "mean" is "mean".The popular, or colloquial term for "mean" is "average".
The nadir angle is the angle between the vertical direction and the line of sight to a target from a specific point. To calculate it, you can use the formula: Nadir angle = 90° - θ, where θ is the angle of elevation above the horizontal plane. Alternatively, if you have the altitude of the observer and the distance to the target, you can calculate the nadir angle using trigonometric functions, such as the tangent of the angle being the ratio of the opposite side (height) to the adjacent side (distance).
No, the math term ratio doesn't mean multiply.
There is no statistical term such as "deviation mean".
I'm not sure if you mean nadir or not but nadir is the term used to describe the race relations between blacks and whites in between Reconstruction and the Civil Rights Movement.
"Nadir" is the point below you - the point opposite to the zenith.
Off-nadir is a Hebrew idiom and the meaning is "something very rare." In remote sensing terms, the term 'off-nadir' (or 'look angle') is used to refer to any point that is not directly below a sensor, but off to an angle in any direction.
nadar
Nadir was Erik's friend from Persia.
Nadir Hasan is 5' 8".
Nadir D'Priest was born in 1961.
Nadir Lamyaghri was born in 1976.
Nadir Nadirov was born in 1932.
Moyshe Nadir was born in 1885.
Moyshe Nadir died in 1943.
Mehmet Nadir died in 1927.