Controlled vocabulary lookup

USGS Thesaurus

Look up USGS controlled terms, definitions, hierarchy, subtopics, and related terms

Terms Single term, CSV upload, pasted CSV, or newline list

Upload CSV file No file selected

Output all matches When checked, broad searches like “sand” return every USGS match instead of only the best match.

Accepted separators: new lines, commas, or semicolons. For CSV uploads, the app uses all non-empty cells. The serverless function limits each request to 250 unique terms. “Output all matches” may return more rows than input terms.