• A hierarchical organizational scheme that arranges the meanings of words into classes and subclasses. For example, vehicles, aircraft, and ships are modes of transportation; cars, trucks, and bicycles are vehicles, and Fords and Chryslers are cars. 1
  • A specific coding language and terminology developed for use in a particular case. 2
  • A hierarchical categorical structure where each class may contain one or more subclasses. The scientific classification system of organizing plants and animals into a specific phylum, family, genus, species, etc. is an example of a taxonomic system. Each subclass is an example of its parent class. 3


  1. Maura R. Grossman and Gordon V. Cormack, EDRM page & The Grossman-Cormack Glossary of Technology-Assisted Review, with Foreword by John M. Facciola, U.S. Magistrate Judge2013 Fed. Cts. L. Rev. 7 (January 2013).
  2. Legal Electronic Document Institute, Basic Principles of Automated Litigation Support (2005).
  3. Herb Roitblat, Search 2020: The Glossary.
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