of unknown origin

idiom
Updated on: 15 Nov 2017

Definition of of unknown origin

used to say that the source or cause of something is not known
  • a disease of unknown origin

Word by Word Definitions

unknown play
  1. : not known or not well-known

  1. : one that is not known or not well-known

  2. : something that requires discovery, identification, or clarification: such as

  3. : a symbol (such as x, y, or z) in a mathematical equation representing an unknown quantity

origin play
  1. : ancestry, parentage

  2. : rise, beginning, or derivation from a source

  3. : the point at which something begins or rises or from which it derives


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