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About Thesaurus and Glossary
What's New in 2016 Edition
The 2016 edition is the fifteenth edition of the Agricultural Thesaurus, first released by the National Agricultural Library in 2002. Terminology is available in both English and Spanish versions. Taxonomic terms from every biological kingdom were expanded in this edition, along with common names of species. Plant species were added following taxonomic verification by the Germplasm Resources Information Network (GRIN). The Report of the International Committee on Taxonomy of Viruses (2015 release) was the authoritative reference for viruses new to this edition. Fish taxonomy was expanded following taxonomic verification from Fishbase. Bacterial taxonomy was updated and expanded by consulting Bergey's Manual of Systematics of Archaea and Bacteria, and other authoritative resources. Fungal taxonomy was updated by consulting Mycobank, NCBI and other resources . Water bird species were added by using BirdLife International and Integrated Taxonomic Information System. Taxonomy for brown algae was updated. Please visit our bibliography page for reference works, databases, thesauri and internet sites that were used in the preparation of the thesaurus and glossary. Other subject areas expanded include terms in fisheries, cell biology, antibiotics, birds, genetics, plant diseases, enzymes, chemicals, ecology, and forestry. The 2016 edition contains 4946 new definitions, which appear in the thesaurus and separate glossary.

Please consult the list of new descriptors for this edition.

Thanks are extended to AgNIC members, IICA partners, Dr. John Wiersema and Carole Ritchie (retired) at GRIN, entomologist Gary Miller and his team at ARS, and to all those who proposed suggestions for changes to this edition. Users are encouraged to send us comments so that we may continue to improve this resource.


  • English
    • Total Terms - 120,618
    • Lead-in Terms - 57,539
    • Preferred Terms - 63,079
    • Subject Categories - 17
    • Scope Notes - 750
    • Definitions - 4,946
  • Spanish
    • Total Terms - 96,742
    • Lead-in Terms - 33,663
    • Preferred Terms - 63,079
    • Subject Categories - 17
    • Scope Notes - 741
    • Definitions - 4,887
Last Modified: Sep 19, 2016
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About Thesaurus and Glossary
  What's New in 2016 Edition
    List of New Descriptors
    List of Replaced Descriptors
  Background and Applications
  Thesaurus Structure
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