- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for biosphere
There are six UNESCO biosphere reserves and nine UNESCO World Heritage sites.Goodbye, Bahamas. Hello, Havana!
December 18, 2014
- 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
Word Origin and History for biosphere
Online Etymology Dictionary, © 2010 Douglas Harper
- 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.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- 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.
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.