In the 2012 President's Budget Request, the National Biological Information Infrastructure (NBII) is terminated. As a result, all resources, databases, tools, and applications within this web site will be removed on January 15, 2012. For more information, please refer to the NBII Program Termination page.
Enter the desired term or phrase into the text box as plain text. Do not use Boolean logic, quotation marks, or parentheses.
The lookup tool performs automatic stemming for prefixes and suffixes. Entering the term "biology" (minus quotation marks) will yield biology, chronobiology, clinical microbiology, age (biology), cryobiology, dating (biology), ethnobiology, etc.
You can "rotate" the thesaurus to examine facets of your particular concept by clicking on the hyperlinked terms in your results list.
If you rotate the thesaurus to view a related term, you can navigate back to your original entry term by clicking on it in the related term results list. Warning: clicking your browser's "Back" button to navigate back to your original entry term may not work, or may require you to "refresh" your page.
The NBII Program is administered by the Biological Informatics Program of the U.S. Geological Survey