1. Proper noun.  The alliance group before and during World War II consisting of Germany, Italy, Japan, and allied countries.
  2. Noun.  (geometry) An imaginary line around which an object spins (an axis of rotation) or is symmetrically arranged (an axis of symmetry).
  3. Noun.  (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).
  4. Noun.  (anatomy) The second cervical vertebra of the spine.
  5. Noun.  ''Axis axis'', a deer native to Asia.

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This entry was last updated on RefTopia from its source on 3/20/2012.