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Definition of biosphere noun from the Oxford Advanced Learner's Dictionary

biosphere

noun
 
/ˈbaɪəʊsfɪə(r)/
 
/ˈbaɪəʊsfɪr/
[singular] (specialist)
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  1. the part of the earth’s surface and atmosphere in which plants and animals can liveTopics Spacec2
    Word Originlate 19th cent.: coined in German from Greek bios ‘life’ + sphaira ‘ball’.
See biosphere in the Oxford Advanced American Dictionary
trait
noun
 
 
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