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nonclassical

[non-klas-i-kuh l]
adjective
  1. not classical or contrary to classical precepts.
  2. Physics. pertaining to a law, theory, or observation that cannot be expressed or understood in terms of Newtonian physics.
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Origin of nonclassical

First recorded in 1925–30; non- + classical
Related formsnon·clas·si·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018