biosphere /ˈbʌɪə(ʊ)sfɪə/

b

I. noun

1. the regions of the surface and atmosphere of the earth or another planet occupied by living organisms.
2. an artificial structure enclosing a self-contained ecosystem or ecosystems.

the elliptical domed biosphere is the largest single-span glasshouse in the world.
II. derivatives

biospheric
adjective


– origin late 19th cent.: coined in German from Greek bios ‘life’ + sphaira (see sphere).

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