tertiary

Part of speech: adjective

Third in number or degree.

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Usage examples "tertiary":

  1. Classification of Tertiary Strata. - "The Student's Elements of Geology", Sir Charles Lyell.
  2. This whole culture is secondary and tertiary, and it truly represents the respectable mediocrity from which it emanates. - "Emerson and Other Essays", John Jay Chapman.
  3. The first point of interest is the origin of these Tertiary mammals. - "The Story of Evolution", Joseph McCabe.