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.
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- 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.
- Axis-ordinates
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. […]
- Axletree
a bar, fixed crosswise under an animal-drawn vehicle, with a rounded spindle at each end upon which a wheel rotates. Historical Examples Now, yesterday I broke my axletree, and I go and hew out a new one of green wood. A Russian Proprietor Lyof N. Tolstoi These bars strengthened the axletree and resisted wear at […]
- Axle
Machinery. the pin, bar, shaft, or the like, on which or by means of which a wheel or pair of wheels rotates. the spindle at either end of an axletree. an axletree. Contemporary Examples The success of the whole structure was extremely sensitive to the size of the axle. The Hardest Part of Inventing the […]