an axis in a plane, about which an area is revolved to form a solid of revolution.
- Axis of symmetry
Mathematics. a straight line for which every point on a given curve has corresponding to it another point such that the line connecting the two points is bisected by the given line. Crystallography, rotation axis.
- Axis powers
noun a group of countries that opposed the Allied powers in World War II, including Germany, Italy, and Japan as well as Bulgaria, Hungary, Romania, and Yugoslavia Examples The Axis powers were led by Nazi Germany. Word Origin from the common pivot on which such an association revolves Germany, Italy, and Japan, which were allied […]
- Axis traction
axis traction axis traction n. Traction upon the fetal head in the line of the birth canal by means of forceps.
y-axis (def 1). Also called axis of ordinates. (in a plane Cartesian coordinate system) the axis, usually vertical, along which the ordinate is measured and from which the abscissa is measured. (in a three-dimensional Cartesian coordinate system) the axis along which values of y are measured and at which both x and z equal zero. […]