WMO Online Library. Access reference books (dictionaries, glossaries, etc.), conference reports, expert reports, working papers, annual and statistical reports, and other WMO publications.

NIST (National Institute of Science and Technology) reference page on constants, units, and uncertainty. General resource for the International System of Units (SI), including lists of units, and examples of proper and incorrect usage.

IPCC. Publications page of the Intergovernmental Panel on Climate Change, including full reports in UN and other languages.

Glossaries & Dictionaries



Meteoterm is WMO's terminology database. It contains specialized terminology in six languages: Arabic, Chinese, English, French, Russian and Spanish. It includes the International Meteorological Vocabulary, the International Glossary of Hydrology and terms from related sciences that appear in WMO documents.

The American Meteorological Society's Glossary of Meteorology (electronic version of the 2nd edition) defines more than 12,000 terms.

Australia Bureau of Meteorology Glossary. A glossary of meteorological terms from the Australian Government's Bureau of Meteorology.

NOAA's National Weather Service Glossary contains information on more than 2000 terms, phrases and abbreviations used by the NWS. Many of these terms and abbreviations are used by NWS forecasters to communicate between each other and have been in use for many years and before many NWS products were directly available to the public.

NOAA's National Hurricane Center (NHC) Glossary of Terms

NOAA's Weather Glossary for Storm Spotters. The glossary contains weather-related terms that may be heard or used by severe local storm spotters or spotter groups. Its purposes are 1) to achieve some level of standardization in the definitions of the terms that are used, and 2) provide a reference from which the meanings of any terms, especially the lesser-used ones, can be found.

TERMIUM Plus®, the Government of Canada’s terminology and linguistic data bank, is one of the largest terminology and linguistic data banks in the world, and gives access to millions of terms in English, French, Spanish and Portuguese. You can find terms, abbreviations, definitions and usage examples in a wide range of specialized fields. The data bank is an essential tool for understanding an acronym, checking an official title, finding an equivalent in another language, and much more.

UNTERM, the United Nations Terminology Database. UNTERM provides terminology and nomenclature in subjects relevant to the work of the United Nations. Information is provided in the six UN official languages, and also includes entries in German and Portuguese.

UNESCO International Glossary of Hydrology in 10 languages (Arabic, Chinese, English, French, German, Hindi, Portuguese, Russian, Spanish, and Turkish).

UNESCOTERM. UNESCO's terminology and reference database in six languages.


IPCC Glossary of Terms used in the IPCC Third Assessment Report

EPA Glossary of Climate Change Terms


NOAA's Tide and Current Glossary


UCAR/NCAR Acronym List

UNIDATA Acronym List

AMS Acronym List

Metar/TAF Abbreviations

WMO Global Cryosphere Watch List of Acronyms

Last modified: Wednesday, March 1, 2017, 11:02 AM