Axis
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See: Axes, Dimension, Euclidean Space.
References
- http://en.wiktionary.org/wiki/axis
- Noun
- 1. (geometry) An imaginary line around which an object spins (an axis of rotation) or is symmetrically arranged (an axis of symmetry). “The Earth rotates once a day on its axis.
- 2. (mathematics) A fixed one-dimensional figure, such as a line or arc, with an origin and orientation and such that its points are in one-to-one correspondence with a set of numbers; an axis forms part of the basis of a space or is used to position and locate data in a graph (a coordinate axis).
- 3. (anatomy) The second cervical vertebra of the spine.