Classical

The word classical has several meanings:

   * Pertaining to the societies of ancient Greece or Rome. For example, the
     Greek and Latin languages, and classical architecture.

   * The style of court music prevelant in the 18th. and early 19th
     centuries, in between the Baroque and Romantic periods.

   * Any mode of scientific thought prevelant at the time of some radical
     new innovation. For example, the physics of Isaac Newton is described
     as "classical", since its assumptions have been challenged by the
     theories of relativity and quantum mechanics.