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Terms & Synonyms

Official WHO Definition

Includes the lithosphere, hydrosphere, atmosphere and biosphere. More generally, a volume of space surrounding a star in which life might theoretically evolve, usually defined by a temperature region in which liquid water can exist. In the solar system it extends from near the orbit of Venus to near that of Mars (United Nations 1992)

Other Definitions


Interpretations and Explanations


United Nations (1992) Terminology Bulletin No 344 on Environment and Development

United Nations Multilingual Terminology Database (UNTERM)

WHO Lexicon page (translations and examples)

See also

External Resources


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