biosphere

[ bahy-uh-sfeer ]
/ ˈbaɪ əˌsfɪər /

noun

the part of the earth's crust, waters, and atmosphere that supports life.
the ecosystem comprising the entire earth and the living organisms that inhabit it.

Origin of biosphere

1895–1900; < German Biosphäre; see bio-, -sphere

Related forms

bi·o·spher·ic [bahy-uh-sfer-ik] /ˌbaɪ əˈsfɛr ɪk/, adjective

Can be confused

biosphere ecology ecosystem environment habitat
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for biosphere

British Dictionary definitions for biosphere

biosphere

/ (ˈbaɪəˌsfɪə) /

noun

the part of the earth's surface and atmosphere inhabited by living things
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for biosphere

biosphere

[ bīə-sfîr′ ]

n.

All the regions of the earth and its atmosphere in which living organisms are found or can live.
The living organisms and their environment composing the biosphere.

Related forms

bi′o•spheric (-sfîrĭk, -sfĕr-) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for biosphere

biosphere

[ bīə-sfîr′ ]

The parts of the land, sea, and atmosphere in which organisms are able to live. The biosphere is an irregularly shaped, relatively thin zone in which life is concentrated on or near the Earth's surface and throughout its waters.
All the Earth's ecosystems considered as a single, self-sustaining unit.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Culture definitions for biosphere

biosphere

[ (beye-uh-sfeer) ]

The thin outer shell of the Earth and the inner layers of its atmosphere; the place where all living systems are found.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.