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axis of rotation
The axis about which any body rotates. / The line joining the North Pole and South Pole about which the Earth rotates daily.
radical axis
(mathematics) The line containing the locus of points from which the segments respectively tangent to two given circles have equal length.
imaginary axis
(mathematics) The vertical line in the complex plane, every point on which corresponds to a complex number having zero real component
real axis
(mathematics) The horizontal line in the complex plane, every point on which corresponds to a real number
coordinate axis
(mathematics, geometry) One of the lines in the coordinate system that represents one of the dimensions.
axis cylinders
plural of axis cylinder
axis cylinder
Axis power
(chiefly in the plural) A country in the alliance (in effect before and during World War II) of Nazi Germany, fascist Italy, imperial Japan, and a few other countries, which opposed the Allies.
visual axis
The optical axis of an eye (extending from the viewed object through the centre of the pupil to the yellow spot of the retina)
semimajor axis
(geometry) Half of the major axis of a circle or ellipse. / (geometry) Half of the distances between the two branches of a hyperbola.
