[ bahy-uh-sfeer ]
/ ˈbaɪ əˌsfɪər /
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.
Related formsbi·o·spher·ic [bahy-uh-sfer-ik] /ˌbaɪ əˈsfɛr ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for biosphere
/ (ˈbaɪəˌsfɪə) /
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
[ bī′ə-sfîr′ ]
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 formsbi′o•spher′ic (-sfîr′ĭk, -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
[ bī′ə-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
[ (beye-uh-sfeer) ]
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.