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Definition of biosphere

biosphere

/ˈbaɪ.oʊˌsfɪr/
bi · o · sphere
Plural:biospheres
•
Adjective:biospheric
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biosphere Lexical Profile

biosphere Game Scores & Validity

• noun

1

The regions of the surface, atmosphere, and hydrosphere of the Earth (or an analogous planet) occupied by living organisms; the global sum of all ecosystems.

Example

"Human activity has significantly altered the delicate chemical balance of the Earth's biosphere."

2

An artificial, self-contained ecological system designed to support life in an enclosed environment, such as in scientific research or space exploration.

Example

"Researchers lived inside a sealed desert biosphere for two years to study how closed ecosystems function."

Synonyms
View all synonyms for biosphere

• Rhymes for biosphere

• Nearby Words

biopsy
biorhythm
bioscience
biosphere
biotech
biotechnology
bioterror

Word Origin & Etymology

Coined in 1875 by geologist Eduard Suess in German as 'Biosphäre', combining Ancient Greek 'bios' (life) and 'sphaira' (globe or sphere).

Cite this Entry

Wordmom. (2026). Definition of Biosphere. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/biosphere
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