Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “biosphere”

biosphere

noun [U]     /ˈbaɪ.əʊ.sfɪər/ US  /-oʊ.sfɪr/ specialized
the part of the earth's environment where life exists The Earth and outer space - general words
(Definition of biosphere noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of biosphere

Definitions of “biosphere” in other dictionaries

Word of the Day

as husband and wife

in the same way as two people who are married

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More