English Lexicon

Biosphere

/ˈbaɪ.oʊ.sfɪr/
nounCEFR C1 (Advanced)Top #1500 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    The regions of the surface, atmosphere, and hydrosphere of the Earth (or analogous parts of other planets) occupied by living organisms.

    "The biosphere is crucial for maintaining the balance of ecosystems on Earth."
  2. 2

    A global ecosystem composed of living organisms and their environment.

    "Human activities are significantly impacting the biosphere, leading to climate change."

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Linguistic Origin & Historical Etymology

The term 'biosphere' originates from the Greek word 'bios', meaning 'life', combined with the suffix '-sphere', derived from the Latin 'sphaera', meaning 'globe' or 'ball'. It was first used in the late 19th century to describe the global sum of all ecosystems.

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